I paid for and used wifi 4.0 in Rock, but when I download in from Cydia, they want me to pay again. How do you manage your purchase and see your license in Cydia?
That means your license has not been transferred to Cydia. Some apps will have an option sign in with Rock ID, then you can put your Rock ID in to verify, then it will be transferred over to Cydia, until then you have to wait for the transition to take place first.
I have two iphones, I bought 3 themes from Rocks, Cydia only transferred 2 themes on one and 3 themes on the other. Those days if you buy Rocks apps , the app you buy is only for one iphone usage. So if you want the same app on another iphone, you have to purchase again and use a different rock ID. So I ended having two Rock's ID. With Rocks I have 15 licenses and about 5 licenses with Cydia. Now I have 20 licenses with Cydia.