In need of some VPN help please…

Hello to one and all, 

first of all allow me to apologise because this to most i bet is straightforward but for some reason i just cannot grasp it at all. 

I purchased the RS200 because i was told you could connect it to a VPN and then all devices which then connect to the RS200 router would thereby automatically also be connected to the VPN meaning that they don’t have to be connected separately. 

I have tried and tried and to put it bluntly i’m a proud man but i know next to nothing about this sort of stuff and so i’m eating my pride to ask this beautiful community for some much needed help and assistance. 

I know how to connect to the web url thing and i know where to go to “enable” it (I’ll attach pictures), however i have no idea what i’m doing here….

my VPN is from Surfshark and i’m trying to sort all this out on my iPhone as i don’t have a PC or anything. 

My aim though is connect the Surfshark thing to the RS200 and then devices such as my television, my mobile, a tablet and other devices would automatically be connected to this VPN especially when it comes to my television, i’m sick of being geo-restricted.

I pay for Sky services, tv package and internet, i pay for BRSK (another internet provider) i then pay for Netflix, Disney, Prime along with Sky movies, and then theres times i cannot find a tv show or movie on any streaming platform… that was the main reason behind me buying the RS200. 

I would genuinely be ever so greatful if anyone at all, can assist me on what the heck i do because truthfully i’ve been at this now for almost 6 weeks and i’ve asked all AI’s and i fail time and time and time again. Either i can’t find what it’s telling me to do or i just don’t understand it with my learning difficulties. Either way, i would be immensely greateful if anyone can help me please. 

I thank you in advance and if your still reading this, then i apologise for babbling for the last few mins. 

Thank you in advance (i pray),

MECK.