Why is mail not changing in general wordpress settings?

Question

Email

Hello guys, in general, such a mess is happening, I put the wp site on the rf domain, there was a mailbox, there are order forms on the site, in general, everything came clearly when filling out and the notification went to the mail, then we decided to change the mail to [email protected], a notification about the change comes to this mail, we confirm that in the general setting it seems to have changed, but letters about order notifications from forms still go to the old mailbox?
And why else is the warning displayed
The site address entered is not a valid URL. Please enter a valid URL.
although everything is correct, the rf domain and there is nothing superfluous

Answer 1

With the rf domain, everything is more interesting than we think))). Write it in puny . With the address in the example, you get [email protected]
If anything, contact [email protected]!