Thank you so much for contacting us. Here's some info on your questions.
The 'Upgrade now' button should direct you here where you'll be able to purchase Kamo. As noted, the button is not working at this stage, but this will be fixed soon.
At this stage Edge Chromium is not supported.
To restore your fingerprint manually, access 'Browser protection' and toggle your selected browser from 'Protected' to 'Not protected' (Fingerprint is restored) and from 'Not protected' to 'Protected' (Fingerprint is changed). If the steps provided are not changing your