Thunderbird 91.2.0 and signature unblock

[fibrolan]

Good afternoon ! My system upgraded to Thunderbird 91.2.0 64 bit and I cannot seem to get my signature to work. Every email I do, I need to push the option at the bottom and unblock. How do I get this to stick, so I do not have to do this every time.
Any help would be appreciated

P.S. I am "Attaching a signature from a file instead of(text,HTML or image)

[tanstaafl]

http://forums.mozillazine.org/viewtopic ... it=unblock

"I have un- and re-installed Signature Switch and simply remade that one problem signature.
It seems to be OK now"

http://forums.mozillazine.org/viewtopic ... it=unblock

http://forums.mozillazine.org/viewtopic ... it=unblock (if you upgraded to 91 from a version older than version 52).

http://forums.mozillazine.org/viewtopic ... it=unblock (if it only occurs with attachments)