Doorbell won't charge or turn on

Hello. I removed my doorbell (1st gen) to charge it a couple of days ago and it started charging no problem. I went back to it later and it wasn't charging anymore and it wasn't turning on at all. I tried several different chargers and the device actually gets warm so it is definitely receiving power. I also tried using the reset button at the back several times and no luck. I have the Ring Protection Plan with extended Warranty and I only bought the device 2 years ago so I'm hopeful that I can get this fixed or replaced. How do I go about this? Or are there other things I can try to see if it turns on again? Thanks in advance.