The immigration office in Chiang Mai has two locations, and Promenada is designated for tourist visa extensions and related services, such as TM30 filings, residence certificates, and 90-day reports.
90 DAY REPORTING RESOURCES / SERVICES
Use the trusted Thailand 90 Day Reporting Service to get your in-person report done and mailed to you for as low as 375 THB (even if the online system doesn't work for you).
For immediate assistance, contact Thai Visa Centre directly via LINE at @ThaiVisaCentre or Email them.