rst_ Welcome to the UPC Community!
The signal values of your modem are ok. We have made the change to IPv4, which will be completed in 30 minutes. Afterwards restart your modem. If you have difficulties, perform a modem reset. Press the reset button on the back of the modem gently with a pointed object for at least 25 seconds.
Please test your WIFI without the 5GHz WIFI. Turn it off once for a test.