I can no longer access Paramount+

I got the email others have mentioned that I will not longer have Paramount+.  Then I got an email that it was sent in error.  Since all that happened, I have not been able to watch P+ on my laptop.  I have had a subscription for several years and did not request a change to my service.  I am paying $5.99 for Paramount+ but cannot log in to watch anything.  I just get the option of signing up for one of the subscriptions.  I spent an hour on the phone with Xfinity about 10 days ago.  She finally put me on hold to talk to a supervisor, then came back and said I needed to call Paramount.  I called Paramount and talked for another 30 minutes.  She said they did not show I had a Paramount subscription and Xfinity was not a supported provider so they could not help me.  I would have to call Xfinity.  I got on a live chat with someone at Xfinity.  After about 20+ minutes of back and forth, she told me I just needed to pick a new subscription and she left the chat!  My husband could not believe I spent all that time and the problem was still not resolved.  I tried to access it on my tv tonight.  I can login to my account but it says I need to "Sign in with your provider to start streaming," but Xfinity is not listed.  That is as far as I can go!