Data transmitted in google chrome vpn extension question

First, some info:

I’ve tried various vpn extensions in the chrome store for my chrome browser. I’ve found that there is one that works the best for me, but I’m not saying what. (so before mods reach for delete, no I’m not asking for advice on which vpn is best, etc).

I have a router that has the dd-wrt variant of open-wrt linux shell flashed to its BIOS, so it allows me to use a built in openVPN client option, where I fill in various VPN information such as TLS key, encryption certificate, username, password, etc etc etc. You know, all the little stuff that VPN exe programs normally all set for you when you activate them.

The issue:

Well, I’d like to be able to enter whatever credentials this extension is using to give me free unlimited vpn that is actually good in chrome, but broadcast to my entire device from the router. But I haven’t the first clue how to do this.

the question:

Is this possible, and if so, how?

Why I ask this:

The reason I am seeking this bonkers method: There is an exe I could download and run for the vpn service on my device, but then it just gives me a couple of gigabytes of vpn data before telling me I need to pay or uninstall it, where the chrome extension that uses THIS SAME SERVICE, gives me unlimited vpn data completely free, and I have zero money before anyone asks.

I figure this is completely unfair to pull on people, I have other programs I want to use this vpn on.

Legality and liability:

This is legal since they put this up in chrome store and all to download completely free and use completely free, also there’s nothing in their terms about reverse engineering the extension to do this on my entire device. (believe me, I looked long and hard before making this post)

Thank you for your time.

The vast majority of the chrome extensions provided by VPN companies don’t actually connect to a VPN… but instead connect to SOCKS/SOCKS5 proxy servers. Currently, the VPN company I currently use deploys their SOCKS5 web proxies on the same physical servers they deploy their VPN servers on (as answered by their support team)… so looking at their app you’d think that they were one in the same… but that’s just not true.

Proxy servers incur generally less risk, use less bandwidth compared to VPN connections due to only routing traffic from the web browser or configured app, and typically throttles non web-related ports. It would make sense that this could be free… and you can can find many free web proxy sites that even use a web interface without needing an extension.

All that being said, I am not aware of DD-WRT, OpenWRT or AdvancedTomato offering client configuration of a web proxy. However, if I’m wrong, I know there are services out there that allow you to manually configure a SOCKS5 proxy (ex. IPVanish)… but I don’t know of any that are free.