EM Client v11.0.1201

Hello, we are currently having an issue in EM Client v11 that was not present in EM Client v10.

I have setup an account as an exchange account in EM Client. I am able to receive email, however whenever I attempt to send, I get an error:

“[Exchange Web Services] Sending email failed due to the following error: The expected XML node type was Element, but the actual type is EndElement.”

I have attempted to remove and readd the account but I get the same error every time I attempt to send. I have since reverted back to v10 and it works just fine… same settings and everything.

Any idea what might be causing this?