Cloud mining operations don't actually mine, they're ponzis so the fork won't affect you at all. Get out while you still can. If you don't want to believe me, just google "cloud mining scam / ponzi".
Let me know how that goes, or don't. I already know what you'll find.
Indeed that's correct about bitcoin mining or any kind of cloud mining operation. The fluctuation is your mining volume are just changed with the increased and decreased price of bitcoin if you look closer. Because they know if the prices are kept high then they will have to pay you more bitcoin payment if they do it really. There is nothing fluctuating in your contract according to the network difficulty and other factors better stay away from the cloud mining and invest into something thoughtful.