When you enter a chapter with a purchase tag on it, there's a "Restore Purchase" button under the price. Clicking that should restore all the purchases you've previously made under the same account you bought them under.
There's nothing else I can suggest then, aside from checking out Rayark's help center on their site: http://www.rayark.com. If you can't find an answer there, maybe try contacting them to ask about the issue.
Hello. Cytus Wikia looks good but it does have quite a few uncategorized pages. Could you please sort those out? Let me know on my wall when you have done that and I'll be happy to add it to the approved spotlight list.
Does your TP depend on the notes you click wrong?
Lets say Ververg, you got a black perfect in the start in one play, then you play it again and you blacked one near the ending, will the TP differ in the two plays?