limiting chat support to users that have upgraded???

[Photogad]

My android app offers a paid subscription upgrade, and I'm wondering if there's a way I can limit the chat support in helpstack to only be for users that have paid upgrade and have the premium version.

I want to still leave the FAQ/Knowledge base for free user.

So basically the live chat support would be a premium upgrade "perk" in my app.

I don't know how it's possible because I'm loading helpstack as an external library and I can't edit the files.