You can do most things easily online at tidy.com or in the TIDY app. Generally, that is the fastest/easiest way to fix any issues.
If you have any questions, the TIDY Concierge is here to help! Contact us at Email: firstname.lastname@example.org
While we don't have phone support (so don't have a phone number), we would love to help by email.
For less urgent matters, or mailing a check on a closed account, you can mail:
1835 Newport Blvd. A109 - PMB 155
Costa Mesa, CA 92627