Honestly… this isnt the first time this has happened either. Been a paying customer for a long time now, and occasionally I get these upgrade buttons, which I am hoping are just bugs, as otherwise it would be very weird as I cannot upgrade to anything higher than Unlimited.
I’ve personally never had this issue (I’ve been a paid user for the last 2 years). Like another commenter said, as annoying as it is, it’s not a super urgent bug. It doesn’t break anything or affect the functionality so it will take longer to get a fix.