Hi Jens -
My understanding of the connection process for Matter over Thread devices is that the initial connection for pairing is via low power bluetooth.
When connecting a new matter device from the Homey Pro Mobile App, there are two options: “Connect via Homey Pro” and "Connect via Android (or iOS)".
The “Connect via Homey Pro” option uses Homey’s built in bluetooth connection to connect to the device and will connect the device to Homey Pro’s own tread network.
The “Connect via Android (or iOS)” uses the phone’s bluetooth connection and it will connect to the cell phone’s thread network – which might NOT Homey Pro’s thread network.
I have only selected “Connect with Homey Pro”. (Homey is the only Matter / Thread hub/bridge that I have/use. I’m purposefully keeping my Matter / Thread ecosystem as simple as possible for now).
If you’re intentionally selecting “Connect via Android (or iOS)” and want to connect to a non-Homey Pro thread network, then you’d need to discuss with Homey Support to determine how to do that.
After selecting the “Connect via Homey Pro” option, Homey Pro will try to open a bluetooth connection with the device (after scanning the Matter Barcode that should be attached to the device).
If Homey is too far away to make the bluetooth connection, you may need to move Homey Pro (or the device, which every is easier) into the same room until the pairing process has completed.
After Homey Pro successfully establishes a bluetooth connection, it will then create the Matter connection, followed by the thread connection (The Mobile App will show you the progress of creating the Matter connection followed by the progress of creating the thread connection).
Once the pairing / Matter / Tread processes are complete, you should be able to control your blinds in the Homey Pro App and you can return the Homey Pro (or the device) back to its original location (if you had to move it).
I recall that during my very first pairing of the Eve Blind motors (after I installed my first device), the top / end positions of the blind had to be manually set before trying to pair with Homey Pro. If they top and bottom positions were not set on the device, Homey Pro and the device would not connect at all. Please see the Eve Blind Motor manual for how to set the top / bottom end positions.
I’m assuming that your Eve Motion blinds are the “new” version that is matter over thread “out-of-the-box”. If they are the older “HomeKit” version, then I don’t have the knowledge to provide any meaningful suggestions.
I’m assuming that Homey Pro is your only Matter / Thread hub/bridge and your blinds have not been setup with another Matter / Thread hub/bridge. If you have or using other Matter / Thread hub/bridges then you will need to discuss with Homey Support.
I’m assuming that you have installed the “Eve Home App” on the Homey Pro (Eve Home App for Homey | Homey) and that when are adding a new device from Homey Pro Mobile app you are selecting “Eve Home” and then selecting “Eve MotionBlinds”.
If you are using a separate “Eve app” on your phone (i.e. not the Homey Pro “Eve Home” app) and you have setup / installed the blinds directly with the “Eve app” on your phone, your blinds are probably attached to a non-Homey Pro Thread network. If this is the case, then you will need to contact Homey support for how to connect Homey Pro to a device is this connected using a non-Homey Pro thread network.
I hope this helps.