Error: Domain name is invalid.

We want to use Apple Pay on our website.

Website address: https://solomon.charity.
When I add it to the Certificates Identifiers Profiles section, I see an error: Domain name is invalid.
Screeshot: http://joxi.ru/82Qj1nQHwQdpkA
This is due to the fact that Apple does not understand the Charity domain zone.
What I need to do to add this domain to my account?