So I have upgraded to 4.7.4 beta on my brume 2. So far so good. The bugs I reported on 4.7.0 seem to be fixed (Windscribe server selection via app, VPN client selection rendering incorrectly)
After upgrading I noticed the inbuilt VPN client selection list wasn't rendering on the main page which was causing previous error however I wasn't sure where they had gone..after noticing the "VPN Book" icon I decided to click on it and found the VPN client selection list slide into focus, which is great as it now renders correctly on my mobile. My suggestions is the icon and it's location.
To me the icon looks like a link to the VPN docs and it's not really clear. It also just states VPN on the icon. My suggestion is to redesign and move the icon / button below the VPN Dashboard. You could just have some text like: VPN Client Select and then a cog wheel at the side, that to me is more obvious that it's a settings button. Another idea would be to just make a drop down menu with each client provider and when you select the option then the overlay for that provider appears for users to enter details.
Just back tracking a little. I mentioned that the icon looked like a link to the official docs about the VPN sections and now I think about it, why isn't there more help icons that navigate to the correct docs? That could be helpful too.