Our app is distributed directly. That's the problem. I installed a lot of directly distrubuted mac app, they do show company names.

Our app is distributed directly. But I installed a lot of directly distributed mac app, they do display company name.

Our app is distributed directly. But I installed a lot of directly distributed mac app, they do display company name.

Our app is distributed directly. But I installed a lot of directly distributed mac app, they do display company name.

https://developer.apple.com/documentation/servicemanagement/updating-helper-executables-from-earlier-versions-of-macos works for new app with new name and new bundle id. No idea why old app with old bundle id, not works, might be because of cache in the system.