I would contact the other site first and find out WTF. It is unlikely, but they might have a good reason for it. If they are just trying to rip you off, solution might be as simple as just asking them to stop.
The thing is that the coin information isn't unique and the block, tx, address, etc info is all on the block chain. The unique content is the profitability and historic information, but the charting is broken in what they scrape.
