I had the same issue, the relay would not switch back to off after sending the on command. I created a program to basically get the relay status back to normal:
If
Status 'GDO-Relay' is On
Then
Wait 10 seconds
Set 'GDO-Relay' Query
Else
- No Actions - (To add one, press 'Action')
There are some other threads in the forum with much more elaborate GDO programs, but this quick and dirty program gets the status back to normal.