Nothing extracted
extract.not_found · HTTP 422
What it means
wait found a message matching your filters, but no code (with extract=otp) or link (with extract=link) could be extracted from it. The problem carries the message's messageId, subject and from, the extraction result with every candidate found in the message and warnings explaining the miss, and the start of the body in bodySnippet.
What to do
Use the candidates and the body snippet to see what the message holds, then adjust minLength, maxLength or linkContains, pass a regular expression in pattern (with extract=otp), or pin a pattern for the workspace.
Every error the API returns is a JSON problem (RFC 9457) whose code names it and whose type links to its page here. See the docs for how the API works.