Pay Api Confirmation email

The confirmation mail that is sent to the paying user shows that it was sent by “mysite-2” (or any number site for that matter), and not the real name of the site (which obviously has a real domain connected to it).
Another matter is that the contact email of the business that the users receives, is my personal email, and not the business one.

How can i change both of these?

Thank you!

Already answered here.

Thank you.
Unfortunately that solution did not fix the problem.
Contacted support.