Standard e-mail signature is replaced by standard Acrobat text when sending a pdf by mail directly

Hi,

Adobe Acrobat reader, version 2023.008.20470 (I already de-activated new version)

Normally, I send my invoices directly with the adobe reader mail function.

When I do this I can choose which application I would like to use. In my case there's only the default mailapplication (Outlook) or webmail.

I choose the default mail application.

Now a new e-mail screen from outlook opens with my pdf in attachment, completely as it should.

Almost completely... because the new e-mail doesn't have my default e-mail signature. Instead there's a standard text from Acrobat about pdf's.

If I try to replace this with my e-mailsignature, then the signature isn't shown well.

In the past this worked normally.

I can't find anything about it.

Thanks in advance,

Geert