Maniacal611

It wasn't obvious to me that sharing a device would use a QR code (I never needed to share a device before). So, I tried sharing a device from Home Assistant to EISY. HA generated a QR code which I scanned with UD Mobile. But it failed the same as before.

oberkc, That is my understanding as well. Home Assistant has the capability to share paired devices, but I'm not seeing any corresponding function in AC or UD Mobile to accept a shared matter device. I had an unused matter device I tested EISY with. My testing strategy was to first confirm the matter device was good by pairing it with a known good controller/hub (i.e., Home Assistant). Before attempting to pair with EISY, I deleted it from HA followed by a factory reset on the device, which automatically put it into pairing mode.

I am confident that the matter QR code I attempted to pair with EISY is valid, because I successfully paired it and other similar matter devices with Home Assistant. Below is the AC matter log from my last attempt to add a matter device. The "Failed to read" errors caught my attention, but I can't say if those are relevant to this issue. 2025-02-23 10:11:56.938] [D] [iox] ZMatter Rest Command 12 : connected=T enabled=T [2025-02-23 10:11:56.938] [D] [iox] UYMProcessCommand.run - Begin - cmdId=12 ec=0 okToRun=T [2025-02-23 10:13:26.923] [D] [iox] ZMatter Rest Command 201 : connected=T enabled=T [2025-02-23 10:13:26.923] [D] [iox] UYMProcessCommand.run - Begin - cmdId=201 ec=0 okToRun=T [2025-02-23 10:13:26.923] [D] [iox] API content: {"api": "set_setup_code","parameters": {"setupCode": "MT:ERS00WMV17G0OR46S10"}} [2025-02-23 10:13:26.923] [D] [iox] set_setup_code(setupcode="MT:ERS00WMV17G0OR46S10", rendezvousType=""); rc=0 [2025-02-23 10:13:26.970] [D] [iox] ZMatter Rest Command 204 : connected=T enabled=T [2025-02-23 10:13:26.970] [D] [iox] UYMProcessCommand.run - Begin - cmdId=204 ec=0 okToRun=T [2025-02-23 10:13:26.970] [D] [iox] Get Matter Device Info [2025-02-23 10:13:26.970] [D] [iox] * setupCode.version = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode.vendorID = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode.productID = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode.shortDiscriminator = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode.longDiscriminator = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode.setupPINCode = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode.rendezvousType = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode.commissioningFlow = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] * setupCode = Err: Failed to read, ignored [2025-02-23 10:13:26.970] [D] [iox] Get Matter Device Info Complete UD Mobile responded with this error: Could not get Matter QR Code rendezvousType. 500

From what I've read, the initial rollout of IoX v5.9.1 either supports a very limited number of matter devices, or the ability to add a matter device is not yet available. All my attempts to add a matter device have resulted in failure with the same message you got.