outlook cannot connect to server

This has been going on for about a month, ever since we got new xinity modem.  I only use outlook for the microsoft games.   (This may seem trivial.) Says there's a problem. with my account.  I've tried everything possible, including microsoft community.  It always sends me a code to outlook email, but while I can open outlook and see old messages, no code is there.  Then I can't even close out of it without turning off pc.  If I try any of the "help", it's the same problem with not getting codes or shutting out.  I don't believe there's a telephone number for microsoft.  Any suggestions?  I admit that I'm somewhat technically challenged.  :)  Thanks.