I don't know if wrong section i'm sorry, i have problem i never meet before when press the game and download the "offline file" i have error message say

"The site can not provide a secure connection

cdn-hw.gog.com uses an unsupported protocol."

I never have this error becuz always download my games how fix it or someone have the same issue?

Help?

Contact customer support.

I once had the same problem.
I pulled the cord from my modem, plugged it back in again and had my computer reboot.
After that, it worked again.
Maybe this will fix it for you, too?

Work for me delete the letter "s" on "https"

Are you using an older browser/version? Are you able to access any other website which uses https?
I would highly recommend that you get it fixed, around a third of websites now use https as default, and it is more secure than http. Not recommended to just ignore this.

Yes i can access at Steam, Youtube, Google Traslate or other site with "https://" the only problem is when download games offline on GOG.

You mean when you download the installer files from the website? That's odd, maybe just a setting. Would contact gog support. I know behind the scenes there is all kinds of Google linking and such like that they do now, so it could be a redirect or something not working.