AdobeSign security blocking countersignature
Hello,
Our issue is the following:
The documents get locked once they have been signed by a user from our company.
If we send the signed PDF via email to an external 3rd party for them to sign on their Adobe, they cannot sign them as it says that the documents are protected.
No actions have been undertaken on our side to create such protection.
So I get the person at our company to sign and I send the signed PDF to the client to sign with their Adobe - that's when things get stuck.
The problem is that it works for us, but it doesn't work for the external...
In general, the pdf is protected so they can't sign...
This happens for templates or a simple document.
When it's a signature workflow, there's no problem.
It's not supposed to lock because I always keep the lock open (see screenshot).
Thank you for your help.

