Doorbell 3 Plus fails to connect to WiFi

Hello,I was using my Ring Doorbell 3 Plus for half a year without any issues. A couple of days ago, I changed the WiFi network to my new WiFi. First it worked as usual, but then it stopped working. If I try to connect the Doorbell to my old WiFi network it doesn't work. I tried 3 different WiFi networks but I can't connect my Doorbell to any of them.The new WiFi exists with 2 seperate SSIDs, one as 2.4 GHz net and 5 GHz net. It supports g/n and WPA3 with downgrade option to WPA2. The password consists partly of special characters, such as "!" and ".". As I already stated, I can not even connect it to my old WiFi anymore. I did not change any settings of my old WiFi network, so I really don't know what else I can try.What I tried to connect to the WiFi network:1. Remove battery pack + insert battery pack again (blue leds flashing)2. Press orange button until white leds are circling around the button3. In the app: scanning the QR code from the Ring package in order to connect to the Ring Doorbell4. Select WiFi network and enter password5. Try connecting... but fails with 2 white leds on the right side of the ring button. 6. Try again with different network, again the same issue.What can I do? What is wrong with my Ring Doorbell?