Hi everyone,
After six months waiting for Garmin support to give me an answer to my problem with Garmin Pay (I could not add cards), an answer that has never come, I decided to try one of the solutions I read in this forum. Create a new account with a different email and associate it with the FR. The result has been that in less than 15 minutes I already had Garmin Pay configured and working. The price to pay ... I do not have my history accessible by having changed my account.
Although everything already works on my device, I have a bittersweet feeling because of the bad management they have made of this problem.
Well, I hope you find this comment useful.
Greetings to all.