Contact information
Block9 LLC
Sales and general inquiries sales@block9.app
Customer support, refunds, and rescheduling support@block9.app
Privacy and data requests privacy@block9.app
Phone (636) 224-8069
Mailing address Block9 LLC PO Box 2 Barnhart, MO 63012 USA
Web www.block9.app
Business hours. Monday through Friday, 9:00 AM to 5:00 PM U.S. Central Time, excluding U.S. federal holidays.
Response times. We aim to respond to email within one business day. Privacy and data requests are acknowledged within 10 business days and answered within 45 calendar days, as described in our Privacy Policy.
Rescheduling notice. Virtual sessions and workshops require at least 48 hours' notice; onsite engagements require two weeks. See our Refund & Rescheduling Policy.
A security note. Block9 will never ask for your seed phrase, recovery phrase, private keys, or account passwords. If you receive such a request claiming to be from Block9, do not respond — contact support@block9.app to verify.