Something is clearly interfering with your connection because, I can see from your screenshot the latest available version is 2.9.2, when in fact it's 2.9.3 and that data is taken directly from the internet so, it seems either your firewall is blocking the connection so you are working with outdated local caches info, or your local cloudflare node is not updated.
As explained so many times, you should NOT "disable" the antivirus or the firewall but, instead, explicitly add the Addon Manager folder to the antivirus Exclusion (but leave it on) and give explicit permission to the firewall for the updater .exe to go online or disable the firewall (but don't disable the antivirus).
If that still doesn't work, it might be a problem at your ISP level, so you might need to use a VPN to download.