I’ve already purchased Brave Firewall + VPN on my mobile device, how do I connect my desktop?

I tried to look for this on the discussions, but im left more confused than ever. I purchased the plan on my iphone and was able to get an ipad connected as well. I want to use my desktop, but they said that I never had a plan in the first place even with the email I used for my apple products.

What do I do?

Follow the instructions on their website?

https://support.brave.com/hc/en-us/articles/13405790544653-How-do-I-add-a-new-device-to-an-existing-VPN-subscription