Transformer Turning Lights Off - App Shows Lights On

Hello, Just installed the Ring Transformer on my outdoor lv lighting setup. I have noticed for a few nights now that after a few hours the lights turn off. When I go back in the app to turn them on the app shows the transformer as on and the event history has no record of the lights being turned off. I then have to turn the lights off and then back on again. Lights are set to go on at dusk and stay on for 4h.