If there isn't anything of value in your floresta arduino.cc account, I can offer the solution of merging your original @floresta Arduino Forum account with your new @floresta1212 Arduino Forum account, then changing the name of your new Arduino Forum account to the original floresta. That will be equivalent to restoring your access to your original @floresta Arduino Forum account.
However, that would not restore access to your floresta arduino.cc account. Going forward, you would need to authenticate by logging in to your new arduino.cc account.
I would of course first verify that @floresta1212 is indeed owed by the owner of the @floresta Arduino Forum account to guard against the possibility of this being a social engineering attack.
If you would like to proceed with that, just let me know. Otherwise, you can wait to see if Arduino Support will be able to restore your access to your original floresta arduino.cc account.
It is true that arduino.cc accounts are deleted if two years pass without you logging in to your arduino.cc account:
https://www.arduino.cc/en/terms-conditions/#:~:text=10.5%20Should%20User%20be%20inactive
10.5 Should User be inactive for twenty-four (24) months, Arduino may close their Account for inactivity.
Activity on Arduino Forum does not count as "activity" in this context. Logging in to the arduino.cc account in order to use the forum does, but authentication is persistent, so you can go for long periods of time without logging in, as long as you always use the same machine and don't clear their browser cookies.
Some time prior to deleting an account, Arduino sends a warning email. The recipient can avoid the deletion by logging in to their arduino.cc account, which changes the account back to having an active status, and thus gives the account at least another two years.
If your arduino.cc account was deleted due to inactivity, you would be able to create a new account using the same username and email.
