Hi, I have an account on shadeyouvpn.com and you can download the pre-configured VPN configuration file. In Networkmanager you may choose VPN connections/Configure VPN.
Than choose Add, Ethernet and when you scroll all the way down you see the option of Importing a VPN connection. If you don see this, you will have to update Networkmanager, for example via synaptic package manager.
If you can see the VPN import feature than simply click on it and browse to the formerly downloaded VPN configuration file form your provider, click on one of the entries and thatś it. You created a VPN connection which is directly activated.
You can repeat this for every entry you like so you can choose from different VPN connections.
Remember though…every time you log in you will have to activate one of the VPN connections manually unless you build a script around it. Good luck and if you have questions: peergynnt@riseup.net.