@norshgaath @thunderbird this helped me: https://support.mozilla.org/en-US/kb/thunderbird-android-import#w_how-to-import-email-account-settings-using-a-settings-file-from-thunderbird-or-k-9

I couldn't import directly from the app (apparently incompatible version) so I exported my settings on my phone and just selected import file in Thunderbird, entered my password, and it worked without a fuss.