Ring version 1 compatibility with OEM (Ring) plug in adapter

I just bought a Ring v1 (720p version) and I purchased the White oem plug-in adapter for it so I could hardwire it and not have to charge it however it never goes past 93% even if it hasn't been used for several days. The instructions for the doorbell say that ac voltage must be between 18v and 24v AC and the adapter is rated at 24v ac and also I thought if I used Ring's own power adapter everything would be fine but it will not go past 93% and if I check live view a few times it goes down to 92% and takes 2 days to go up 1%. What am I doing wrong? Also, I live in central Florida and it's been pretty warm so battery health should be good and Device Health is good. Included a picture of the power adapter. Any help would be greatly appreciated. Thanks.