Can't Install Bitdefender VPN

I have exactly the same experience. Uninstalled Bitdefender Total Security supplied through my Armor subscription because I was having problems with Bitdefender blocking websites I could previously access e.g. Ancestry, FindmyPast etc. Prior to uninstalling it, my subscription VPN service through Armor was working. It is still working on my MacBook Air. Now I can't re-install the VPN. Click on the button and nothing. The button is now a "do nothing" button. I had this problem a year or two back and I found an obscure fix on the net which from memory involved uninstalling Bitdefender then running a terminal command(s) followed by a re-installation but for the life of me I can't recall where on the net I found the fix. Needless to say Netgear support have been less the useful in trying to solve this issue and Bitdefender support are rightly saying NOP! My solution is to cease my automatic subscription renewal and when it expires uninstall Bitdefender and start a subscription direct with Bitdefender which is what I had before I purchased my Netgear Orbi mesh system. Given the number of people having this issue you would think that Netgear would put some priority into developing a fix for their paying customers. Me thinks their focus is more on hardware solutions and at some point some marketing guy convinced them this would be a good sideline for additional revenue and now they find it too hard but don't know how to exit the strategy.