"Error posting envelope to FuseSign: {"Message":"One or more errors occurred"}

Issue
I have configured the connection with FuseSign and FuseSign confirm our account is activated. But when I send a document for signature in FYI, I get the following error:
"Error posting envelope to FuseSign: {"Message":"One or more errors occurred"}.

If I disconnect and reconnect FuseSign, I then get an error:
"A signature service is not configured - To configure please open Apps and connect AdobeSign/DocuSign".

Cause
We have been informed by FuseSign that the error message relates to the license agreement with FuseSign that you need to accept.

Solution

1. Go to the FuseSign website https://app.fuse.work/fusesign and accept the agreement.
2. Once done, try again to use your FuseSign account in your FYI account. Refer to Digital Signatures using FuseSign.