It is working now, I turned off queue in the fax default settings.
Do you know how to send an email to fax? I am unable to find any documentation.
There is no public-facing documentation on how to use the IMAP functionality for Email to Fax. However, it is available in the Member Documentation (Paid Plan) from FusionPBX. I'm not sure if there's a license or copyright issue with posting the Member Documentation instructions, so I'm going to err on the side of caution and not post the instructions, unfortunately.
That said, the feature is not that great and quite cumbersome compared to other competing vendors' implementations.
We send over 10k faxes a day using the standard web portal for our customers. They like the dropdown for adding contacts. I would stick to that.