Wasserstein Solar Panel

I purchased this solar panel for my Ring battery spotlight cam back in August 2021. I didnt install it until September 2021 but after install it was great. The cams battery would drop to 80% overnight but would recharge to 100% by noon. Unfortunately in August 2022, the solar panel stopped charging. I removed the battery and removed the solar panel connection from the cam and then inserted the battery and solar panel connection to see if it was a glitch. The solar panel started charging again but the stopped charging a few days later. I purchased a Ring solar panel and will try that out to see if the cam is the problem.