Outlook plugin error

I Get an error " the settings are incorrect. please check the server url, username, and password". My current setup is as follows. Ubnutu server 16.04 with current build of Nextcloud v12. Using self signed certificate. Configured to do LDAP lookup (Running windows 2016 server) . It is setup internally for now. Using the latest build of outlook plugin. I can login to the web interface with LDAP users no problem but when configuring the outlook I get the error as indicated above. I have also imported the cert. Also, I tried a local user and not a user from LDAP look up same problem. It seems to be hanging up on the URL. I copied and pasted the url. Is there any logs so I can get more details?