Contact
One person reads this. There is no ticket queue and no chat widget.
Support
Email [TO SUPPLY: OWNER_SUPPORT_EMAIL].
Expect a reply [TO SUPPLY: OWNER_RESPONSE_TIME]. If something is broken, saying which page you were on and what you were doing saves a round trip.
Postal address
[TO SUPPLY: OWNER_LEGAL_NAME]
[TO SUPPLY: OWNER_POSTAL_ADDRESS]
This is the address that appears on the bottom of any marketing email, as the law requires. It is not a place to visit.
Accessibility problems
Same address, and they get treated as bugs rather than as feedback. The accessibility page says what has and has not been tested.