Contact
One person builds and maintains this site: Gabriel Zacarkim. Messages arrive by email and are read.
A number looks wrong
This is the most useful message you can send. Include the ticker or the manager, what the page shows, and what you expected — the filing it came from, if you have it. Errors in published figures are treated as defects and fixed.
Anything else
Questions about the data, requests for coverage, press, or a note about the site itself are all welcome here. There is no support contract and no promised response time, but messages are not ignored.