Hello,
We ran some tests and the logs we got from users we can see that errors are from IMAP not SMTP. And they're all the same - the app connects, and the server aborts (breaks) the network connection.
This is an SSL (encryption) test for this server. As you can see it gets an "F", complete failure on encryption configuration.
https://www.htbridge.com/ssl/?id=4HYhrqe8As you can see the issue comes from outside Aqua Mail. We tested this and managed to add test email account to our app. It worked - in the sense that it was not able to log in, but no network connection issues what - so - ever.
It will be best to contact wp.pl and inform them for the problem.
Thanks,
Nadia