1. MARA registration at the agent level
Australia regulates migration advice through individual registration, not company branding. The firm should name the MARA-registered agent (with their MARN) who will handle your case and give you a direct link to the OMARA register. "We are Australia-registered" without a named, searchable agent is not enough.
Verify: search the MARN on portal.mara.gov.au and confirm it is current.