As a security related program, it is surprising your installation is not signed. Signing is simple, relatively cheap, and would boost user confidence in your product.

As one of the kind moderators of GOTD wrote here:
The installation is signed actually, and it is GOTD protection methods that prevent the certificate from showing at the very beginning. You can try to run Sticky Password trial version installation file from official site to check it.

Hope this explains the question. We pay much attention to these matters so apologies that it appeared otherwise.