On my perma-account, the Marketplace Window now says, "Add time so you don't miss your next 500 DB Reward!" On my other account, that is paid annually, it merely details the date of the "Next Reward." So, clearly, it thinks my Perma-account has no time left and is about to expire, but it knows that my other account still has time left.
Has been a few Lifetime members getting this in the past few weeks, among a few other back end systems messing up & causing issues. Less a game bug and more a back-end account management issue, fix is through petioning for the time being, at some point maintenance to find/address why this keeps happening is going to be needed.