Ring Pro does not reconnect to wifi

Hi all, I installed my ring pro last week. Everything worked, until this afternoon. The wifi connection got lost and it won’t reconnect. I tried resetting router, disconnecting electricity, resetting device. Nothing! The device is connected to the electricity network also transformator is installed correctly (worked before). The light on the bell only blinks or remain constantly on, it doesnt go into the wifi installation mode where it swirls around. Any help? I am clueless