I should download the Ring Doorbell app (https://homey.app/sv-se/app/com.ring/Ring/), but it seems removed? Someone who has a clue?
Yes, issues with 2fA. But use search for a solution.
A bit of search and you find the answer straight on that Ring has forced 2FA and the Ring dev app has withdrawn his app.
See here for a solution that works 100%.
I haven’t tried it but it looks like https://github.com/kaohlive/com.ring is a more polished version than my hack.