Question on Plan charges

Hello, this is my first post here. I was just wondering if I could get any information on recent charges for my account. We started out with just two devices so I paid for the $30 plan but I recently added two more devices so we have 4 total and I upgraded to that $100 Protect Plus Yearly. I saw the $100 charge on my credit card on 1/1/21. That was fine but just yesterday I got that $30 charge again. I just contacted Ring support on the chat and they told me they didn't see that $30 charge. Is this right? I am supposed to be paying $130 instead of $100? Just a bit confused here.