Hi - Just a community member here, so not an official answer from Camunda.
Elsewhere on the forum, your question has been asked and answered several times. In Camunda up to and including 8.5.x the Non-Production rules for Tasklist, Operate and Optimize apply to both the Web Portals and the APIs. Only the Zeebe engine can be used in a Source Available model. There is no “Community Edition” in Camunda 8.
Starting with Camunda 8.6, the Zeebe engine will also have the “License Required for Production Use” Important Licensing Changes to Camunda 8 Self-Managed