Setting up permanently in 2 months....RCS

Hello, I AM A user from Spain. 2 months ago, since I changed my mobile phone number, the messages application shows me the message "verifying" or "setting up" indefinitely, with the old mobile number, RCS chat worked perfectly, Although before changing the number, I forgot to deactivate the RCS chat, but I no longer have the old number nor does it exist...and I think that maybe Google is confused...my new number is updated in the database of google in Google one, etc... and in app messages, but the message that the application tells me is always the same "setting up" "trying to verify your telephone number" (attached screenshot) I have done everything by deleting app data messages, from carrier services, put airplane mode on, factory reset the phone...(OPPO FIND mobile....Any real solution???  please?  THANK YOU.