Javi

Tapping the indicator (triangle) next to the command parameter name (i.e. Group, Sound, Content) changes the selection from predefined values to variables.  This is how all programs behave and allows for saving a status to a variable then sending that status as a command parameter.   This works with integer variables as all Status and Command values are static and enumerated at a lower level.

On our list, but we don't have a time frame.
Also see the following for limitations:
 

Changed 100 to 200 on Wiki.    Too many false exits with 100 meters, although it may need to be much greater depending on location to avoid false exits.

Should be live now. 
Issued caused caused a race condition when  returning from backup dialog (System file selector) which briefly restarted subscription (value population). This caused removal the newly populated values along with removal of unused values.

Wifi is not available while ethernet is  connected.   Set Wifi credentials from UD Mobile > Settings Tab > WiFi Configuration.

Because all status values in ISY are represented as numbers. While it is possible there are negative values this is not very common so negative was omitted for globals, but can be set in custom mappings.  Most dimmable lights/switches have values 0 (off)-100 (full on). Most non-dimmable lights/switches have values 0 (off) and 100 (on).  Globals may not work well with devices which do not conform to 0 (off) and greater than zero (on).
I don't think the Node Dashboard screen Scene Members section incorporates colors of any type, but the same device should have a color in the Node List or in Favorites.    This screen has not changed much since release, so it is due for a upgrade, I'll try to get colors in at that time.
Programs will always have the positive color as they do not conform to 0 for off and greater than zero for on.  They have 4 common values Idle-true, Idle-false, running-then, running-else.  Adding globals for programs is on my list, although it has lower priority to other features.
 

Yes see https://wiki.universal-devices.com/index.php?title=UD_Mobile#Migration
Jump down to about 8 lines to 
Finally migrate your favorites and settings in UD Mobile. First backup UD Mobile from Settings-Tab > Backup in case of errors this way Favorites and User Preferences will not be lost.

Without seeing the Notification Content I'm only guessing, but I think this is the keep alive setting. Older versions of Android required a persistent (non-swipeable) notification whenever an app was running in the background. Then there are a few versions which required the notification but allowed users to swipe it away. The newest versions of Android show this in another setting (bottom of expanded settings in Running Apps).
The default was "1" or "2", so the Notification should disappear 1 or 2 minutes after closing the app.  The setting is intended for only a few minutes,  none ("0"), or negative (infinite).  The issue with none ("0") is switching between apps will kill the connection, so on return there could delays while UDM refreshes values.
If you are on a good internet connection and have a  small/med system you may not notice any difference between 0 or a few minutes.  If you are on a poor connection, have a large system, or have multiple systems connected to UDM then refresh may take a few dozen seconds.
Android OS also allows users to hide these persistent notifications in Android settings if you truly want the app to run in the background and not see the notification. If I remember correctly long pressing the notification will show which types of UDM notification channels to hide.
It is also possible that some versions of android do not remove the notification after closing. If this is true, it has not been reported.

1.1.49 removed the ability to hide systems nodes on the home tab, so they were likely hidden prior to this release.
I'm pushing version 1.1.50 now which should show root nodes even if hidden.  Google play has been publishing updates between 2 -12 hours, so try checking for an update later today.

Is the app working, besides the error during synchronization?
The error appears to show an empty file. If the app is working, then it could be that Node Server needs to be configured before this file is populated.

Ok, thanks.  I cannot replicate this on my side. 
Please remove, then try again.

I've added an issue to our list to add a single section to view available updates.  Not sure about time frame.
https://github.com/UniversalDevicesInc/UD-Mobile-iOS/issues/93

Please send me a PM with the app's backup and I'll take a look. Alternatively open a ticket and include a zipped copy of the app's backup.

The "Enabled" Command for a program Enables (True) or Disables (False) the program.  This will not run the program.
Depending on how the program is setup, you likely want Run IF, Run Then, or Run Else command which will run the program.
 

Yes, place Favorites Screen in edit mode (pencil icon at top of page), click the Favorite Tile, Select Edit then change the Favorite Type to Toggle Widget. Save Favorite then disable edit mode (pencil icon at top).
For more advanced configuration the Command Type will work. See: https://wiki.universal-devices.com/index.php?title=UD_Mobile#Favorite_Custom_Toggle
Place Favorites Screen in Edit mode, Click the Favorite Tile, Select "Configure Advanced Status Color/Value/Icon Configuration".  Press the Add button at the top to add a new condition.
See: https://wiki.universal-devices.com/index.php?title=UD_Mobile#Individual_Status_Mappings
Same as Question 2.  However, currently Individual Status Mappings do not have the option for URL Icon, so only included icons are available.  This is on our list, but not sure of time frame.

The error signals that the current SSID as reported by iOS does not match an SSID entered into System Network Relations.
Do you have multiple SSIDs?  If you do please add both SSIDs to the System Network Relations.
I've added the current network to the this error message in the next release.

Please see the following post for updates and instructions for Local Network Connections.
 

Hi we are aware of the issue.  Please see the following post for updates and instructions for Local Network Connections.
 

The program looks correct. The Customization with variables will only populate the variables if they exist.  If manually running THEN, most of the variables will not exist as there was no event that triggered the program.  With regards to the message not being the text entered into the Customization, it is very likely the Customization and/or Program was not saved before running THEN.
 

Likely due to Local IP Address Changed.
If you Added a WiFi network in Settings Tab > Systems >  Your System > Local Connection Settings (expanded) > System Network Relations. Then the app is on this network it will attempt a direct local connection.
So either the IP entered into the app must be reserved on your router or remove the WiFi Network from Local Connection Settings.

UD Mobile currently creates basic scenes.  Editing of Scene Links, for things like ramp rate and on level, must be done from the Admin Console.   This is still on our list for UD Mobile.
There are limited Scene edits in UD Mobile by either Home Tab edit mode or Node's Dashboard settings.  From Home Tab enter edit mode by clicking edit button (pencil icon) then click the scene then click Edit Scene.  From the Node's Dashboard (screen with all status and commands) click settings (gear icon) then click Edit Scene.

Is the favorite type "Default"?

Server issue corrected.

Favorites is rebuilt in version 1.1.32 of UD Mobile to prepare for other enhancements.  This should correct this issue.

Any sub domain at isy.io so *.isy.io
It is very likley there is another issue, please got to Settings > Systems > Your system.  Press Test Remote Connection, then post a screenshot of the error message.  Be sure there is no personal info shown in the screen shot.
If you get an error saying your are on a local connection, then expand local connection settings then press the Test Local Connection button, then post a screenshot of any errors.