PostgREST: can't update record via REST API (DATA)

I can GET, CREATE, and DELETE records in our PostgreSQL (via PostgREST) but UPDATE (PUT) doesn’t work at all. I tried many different “definitions” but none works. I understood from some forum topics that AG can’t PATCH but even if I include all columns, it doesn’t work.

Here’s one of the most frequent error messages:

Error: JSON error response from server: {}.status: 404

Resource settings for Update record (PUT)

PostgREST PUT users config

Resource URL: (removed)
Relative path: pm_users/?id=eq.{id}

Using a flow function wouldn’t be a solution since I don’t want to include a token in the URL.
Any idea? Thanks!