Webmail shows new email but never appears in Outlook client inbox

I can remove the account and re-add the account, inbox will show all correspondence up to that time but still doesn't receive any new emails after

I was using version 14.3.9 when this first happened, updated to 14.4.1 and the issue still persists

Can anyone help me resolve this ?

Thanks

Hi there,

this morning I had no new email messages.
When logging in to outlook.com I sometimes get a message ' Sorry, there seems to be a problem with Outlook right now' If I hit the 'Try Again' button  am able to log in to my account
however no new email messages appear (I sent some from another account to test). Also I cannot delete any email. If I do I receive this message:
"Sorry, something went wrong. Please try again, or refresh the page. "

None of my IMAP clients can synch with the account either (iphone, ipad, outlook). Yesterday evening it was working fine. I have not changed anything to the account.

I am using a custom domain. However other accounts on the same domain seem to be just fine. Only my account seems to be affected.

*** EDIT***
Maybe this is related to the problem. The last email message I received was an email with no subject which I sent from my iPad.

Thank you!