Thank you so much! I did all the steps and it started working :D This is so much more convenient than before

I just installed Heliboard but nothing seem to have changed? I still need to switch to Magikeyboard for login anyway. Am I doing something wrong?

Can I ask how you deal with it? Free tutanota lacks even the most basic features i.e. offline mode/search. I switched to proton after a month, it was infuriating