@ajb2k3 it's not in the device selector. So it's not bound. However I cannot re-bind it, since m5burner does not offer me the binding dialog

@ajb2k3 I have erased and re-flashed the Stamp multiple times. I never got the 'registration' form again and I'm still not able to add it to UIFlow 2.0.
I don't know where the information is stored (m5burner or UIFlow) that this stamp has already been seen the 'bind' dialog.

I have an M5StampS3 that I cannot add as a new device in UIFlow 2.0.
Since this is my first device I may have done something wrong when initially trying to bind the device. However I don't know how to unbind/re-bind the device. I remember that I entered a custom device name.

I have a second stamp that is working. I left the device name unchanged and have been able to register the device using the MAC.

For both devices I got the error 'Request failed with status code 400` when trying to bind the device.