LR - can't sign in

A previous member of the forum posted this message and it applies to my problem. It was only solved through customer support getting involved. How to I get hold of customer support?

I purchased the Creative Cloud Photography plan (one-year) and opted to pay monthly. I've made two payments thus far, and I've been happily using Lightroom Classic. I just got some free time so I decided to fire it back up and work on some photos. I'm getting the following message:

"Lightroom will open with reduced functionality. Please go to Help -> 'Manage My Account' to purchase a membership to continue using Lightroom."

I have not updated the app since I last used it, nor have I logged out of CC. I logged out and back in hoping it would fix it. It didn't. I've also tried updating, making sure my payment plan was still active, making sure my card was still valid, and making sure that I made my last payment (which was only 10 days prior to writing this).

I've tried everything I could think of. I'm posting here hoping it's an easy fix that someone already knows about. If not, I'll call customer support to get this figured out. Aggravating not having access to software that I paid for. Hopefully a kind soul can help me out.

Regards.