Set up to use VPN provider

Greetings all, I’m hoping someone can help as I’ve been googling for hours without success so far.

I have a home network utilizing a RB2011UAS-2HnD-IN router. It’s been working great the last year, no issues. Now however, I wish to set it up to use a VPN service (vikingvpn) which uses an name, passcode, and OpenVPN certificate to use it’s service. All the tutorials I can find involve using a static IP provided so I really don’t know how to proceed atm. What I’d like to do is set up the router to connect all network traffic to the VPN provider. (ie. I don’t want to have to set up OpenVPN on any of my home systems. Just on the router.)

So, I need to know the process of both setting this up and how to import the provided certificate. Any and all help would be much appreciated. (My wife’s grumbling on how long I’ve already spent on this.) Thanks.