My main usage is:
Opera stable on Windows (Pro) or beta on Linux (Home)
Opera Touch on Android

All 3 devices are in the Flow list.
From Opera Touch, when I send a url using the flow icon in the address bar or the one in the touch button, I get a notification on the Flow Icon in the Panel Bar, but the Flow panel stays empty.
From Opera Beta, when I send a url using the flow icon in the address bar, I get a notification I can click to access the shared url, or read a note, but there is no Flow panel (to read older shares, e.g.)

1. Do my use cases are supported in My Flow ?
2. What are the other use cases supported in My Flow ? I may be able to use them to workaround my failing.
3. Maybe it comes from the platforms I use. Are they supported ?

Thank you for your help and support