Personally I wouldn’t trust until I can prove that he is a buyer by either his “purchase” badge or verifying his purchase code (you can install Dashboard Plus extension for the purchase code verification feature right on the author dashboard).
I see that you told him your email in the comment. Did he send you again the purchasing info?
She’s beautiful. Congratulations!
Please contact the theme author directly for the support.
Congrats Luca! Awesome achievement!
Yes, it is critical and still required to fix the error.