Outlook stopped synching with AOL

I upgraded to Windows 10 a few weeks ago and shortly thereafter Outlook (MS Office Pro Plus 2016) stopped connecting with my AOL email.  I've triple checked that all of the IMAP/server settings are correct and then deleted and tried to reload my AOL account from the start, but I cannot get past this log-in fail message.  AOL mail continues to work fine on all my other devices, so no apparent problem on the AOL end.  What do I do next?