By the way it would not hurt if you can post a photo from both sides of repeater here. I have a feeling that you got one of these well known weirdos -
first one and
second one (Banggood links due to absence of original ones). Was very popular few years ago and often are used in selling scam schemes. In reality usable only as AP extenders via Ethernet cable, because WiFi signal extending directly is painfully slow and unstable. These craps use same channel as AP use and are not configurable to switch another channel for extension AP.