Members only content is restricted even with correct membership level

The first report of members not being able to access members-only content came about 24-hours ago. Upon checking, I realized that no members could access the restricted content regardless of their membership level.

I have disabled all other plugins except PMP and the problem still persists. Interestingly, I’m in the middle of launching a big upgrade for this site and the copy that’s on my development server does not have this problem, although it appears to be identical. The live site, which is having the problem, has not changed servers and this started right before I started rolling out any changes (of course).

I’m about to troubleshoot but wanted to throw this out there in case anyone has any bright ideas.

Thanks!

https://www.ads-software.com/extend/plugins/paid-memberships-pro/