I know that there is an issue, but unfortunately, it is not super easy to fix. This issue occurs if there is another app running that is using the same technology as this one. It should work after this particular app was closed.
So try to close all other apps which are currently running. Maybe, in some cases, it is necessary to restart the phone after closing all other apps.
I know that this is super annoying am I'm sorry for the inconvenience!
Long-term this issue will be fixed. I hope for your patience!