I found the answer to my problem!!! Address tagging was not enabled in PostFix.
Edit /etc/postfix/main.cf
And add these lines:
Enable address-tagging for the + character
You can append more if you need to, like: ±
recipient_delimiter = +
Remove the tag from the forward address
propagate_unmatched_extensions =
I don’t know why there aren’t more people with my problem, greetings to all!