War in Ukraine. 
We publish our distributables in zip files. Please do not open a zip file directly in Windows Explorer. Instead, right-click it and select Extract All from the context menu. Then switch to the Digital Signatures tab of setup Properties, select either signature, and click Details:
Click the View Certificate button:
You'll see general information about the certificate:
On the Certification Path tab, select 4Bits Ltd. and make sure that the certificate is valid:
Related issues
The digital signature is corrupted