I can't configure any new email
Hello, I can't configure any new email on my thunderbird.
I have tried yandex.com (of which I already have a working one configured), protonmail.com, mail.com, with any provider find the configuration but then error: unable to authenticate on server. The configuration, username or password might be wrong.
My version of thunderbird is 91.9.1 (64 bit) on linux mint.
Can you help me understand why I can't configure any new email?