Can't connect Thunderbird Plesk

Hello,

I have problem with Thunderbird app. I can't log in through Thunderbird app on my desktop.

On URL https://webmail.domain.com I can connect and everything work smoothly without any issues. I use CloudFlare DNS and latest Plesk Obsidian v18.0.29_build1800200825.21 os_CentOS 7.

So, I try a lot tutorials how to setup Thunderbird without successful. I also follow this...

Can't connect Thunderbird Plesk