Hi Dubuquerp4β π
currently many users facing the same problem.
When your headset is already on v81 but the link app is still on v79 cable link just doesnT work anymore.
You can enable PTC in the link app, by doing that the link app will be updated to v81. Cable link worked for me again after having headset and pc app on the same version.
Unfortunately, it seems not working for allπ€·ββοΈ.... you must try it.
Go in the link to settings - beta - toggle public test channel.....you can disable it at any time and it will bring you back to v79.
About your email..... go here, select personal info - not sure, if it says exactly that, my page isn't english - on the left bar
https://accountscenter.meta.com/profiles