imap-mail.outlook.com
port 993
Use SSL/ TLS on special port (legacy)
Ok your incoming mail settings appear correct for the automatic account setup.
Yes from your previous post you had a Outlook Office 365 POP setup which then needed to change to IMAP due to Microsoft legacy changes and was eventually sending and receiving ok after you uninstalled and reinstalled eM Client and started new again.
However as it’s now no longer receiving and you are getting all those errors in your new post above when receiving, could be something possibly interferring with eM Client. Do you have any optionally installed eg: Firewall / Security program, or optionally installed antivirus program or VPN other than what comes default with the OS?. If you do, then try completely disabling those to test incase of interference.
Now if you don’t have any optionally installed programs like that or disabling those made no difference, then I would try closing eM Client and going online to your Microsoft account and “remove the eM Client third party apps OAuth2 token” and then reopen eM Client which should then prompt you to re-allow eM Client access to your Microsoft Outlook account. Then see if it receives mail again.
Failing that “try changing your Incoming mail server address” to
outlook.office365.com instead of the default imap-mail.outlook.com as in your original post server address and see if that receives.
outlook.office365.com
port 993
Use SSL/ TLS on special port (legacy)
Haven’t been able to get several folders to import from Posbox so it’s never been a satisfactory setup.
Did you try doing the following to manually import your missing Postbox folders as I suggested to try in your original post ?