external power keeps killing the Ring2

So i have a Ring 2 and bought the power supply in the link below to run from my basement wires into the back of the Ring2, it shows in the app on my phone that it is working by the power source showing hard wired vs battery and then a few months later it changes back to battery and the battery dies, The power supply is outputting 18V still when i put a voltmeter on the Ring screw but its not working. Ring has swapped out my dooribell a few months ago and it waorked again as it should but again about a week ago i got an alert that the battery is dyin and the app no longer shows a hard wired connection. Im not sure what else could possible be wrong I read about a diode but that doesnt seem to be related being im not hooking it into an existing system, just going from the power supply straight to the Ring2 Power adapter.- [https://www.amazon.com/gp/product/B07DT3MVSM/ref=ppx\_yo\_dt\_b\_search\_asin\_title?ie=UTF8&psc=1](https://www.amazon.com/gp/product/B07DT3MVSM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)