Can't install CIS on Windows 7 ?

Hi,
Trying to use CIS offline installer on Windows 7 and install fail after error 2148098050. "Comodo is not signed".

I made differents verifications before posting here.
- checksum was check after downloading.
- I used two differents hardwares in order to eliminate machines issues:
Windows 7 32 and 64 editions failed to install with same error.
Windows 10 no error and working firewall.

Comodo stop supporting Windows 7 ? Bug in software ? Something I missed ?

Thanks for help.