Ring Doorbell is not charging with USB

I have one of the earlier Ring doorbells and I would have to always charge it every 2 weeks.I usually charge it with the USB in the back of the Ring, however when I tried to charge it now, it doesn't charge at all.I tried looking around for solutions and I've been seeing threads about adjusting the plate, but it's not charging with the USB at all either.What can I do to fix my doorbell?Thanks!