Hi @CaterinaCurti @sash011, thanks for your time in looking into this. I finally figured out why /rest/api/search/user was returning 0 results for me with the help of @SadiqSatriya!
The first clue came was when I was able to search for myself with that API and that’s when we found out the other users I was looking for was lacking product access to Confluence.
These users were migrated from Confluence Server under scoped migration.
After granting them product access, only then I was able to see the results when I run the query with AP.request().
gonna go hide in a corner now…