Ring bell 2020 doesn't recognize existing power feed

Hi, My 2020 Ring doorbell is connected to the existing power cables and everything works fine, including the existing in-house doorbell, except the bell draws its power from the battery, not the transformator feed(see transformator Pic below) . It doesn't recognize the power from the power cables at all and I have no option to change to AC/DC. If the power output would be to low, which is probably the case, it would at least be recognized as such in the app right? What am I missing and how can I solve this?