Corrections are the most useful message you can send: support@aircargo.hk.
Send the ULD or contour code, the field that is wrong, the value you have, and the document it came from — carrier W&B, handler manual, or ULDR clause. A correction with a source is applied and dated; one without gets a reply asking for the source.
Also useful
A ULD type missing from the library, with its published specification.
A door-step or position limit for an aircraft where this site has left the field blank.
A build-up rule where the source grade shown here is wrong for your terminal.