Apologies for the delayed response.
When you first attempt to run the installer you will receive a Mac OS notification saying that it can't be opened because it cannot be checked for malicious software. Click 'OK' and then go to System Preferences > Security & Privacy > General and click on 'Open Anyway' down the bottom. It will either run the installer or another similar notification as the first will appear and you just need to click 'Open' and then the installer will run.
Please be aware that it may still not work in Safari, but we have reports that it will work with other browsers.
If there are any connection problem in browsers then the next thing to do is check the certificate. You can check and amend the trust properties on the certificate by doing the following:
Open Keychain Access and go to: System Keychains (left menu heading) > System (left menu item) > Certificates (top menu item)
Double click the applian.com certificate to open the information
Expand the 'Trust' section and set the "When using this certificate:" value to 'Always Trust'
Please let me know if there are any issues at the end of all this.
From Liam @ 02 Aug 2022 20:08