Форум сообщества Thunderbird for Android

Where you can switch between accounts, an "Avatar" (circle) is generated automatically with the 2 first characters from the email-domain.

Can be ok, but I have several accounts on the same server, resulting in identical "Avatars".

Is there a way to change what's shown ? If not, could this be implemented?

Thanks

tb 8.0b4 on android 14 samsung ui 6.1 phone. Two gmail accounts (personal and university). Work nicely and tb does not miss emails but I often get notifications "authentication failure, update your server settings". Clicking opens mailbox settings, from where just clicking "next", without making any changes or edits, solves the issue

I'd like to know relation between K-9 and Thunderbird. I could't register to https://forum.k9mail.app to chat as no registration email was sent to me during couple of days since I tried to sign up. I don't want another chat app, like Matrix, I prefer forums. Why thunderbird-android on github is signed as "fka K-9". Is K-9 becoming Thunderbird? So why there is Thunderbird beta? Both apps are said to be developed by the same developer on Google Store. I need some additional info before I switch to another all-except-gmail-bloatware email client on a new device.