As others have already pointed....45 days hold off is a huge period. You say the campaign might be cancelled anytime owing to factors out of your control. Would you pay out people on the basis of how much time they run your campaign before you stop this(in case you do)?
I guess u got me a little wrong. I think u r referring to the following...
Note 2: Continuation of the campaign is dependent on the result I receive in this 45 days and the bitcoin price at that time. Even if it continues, you need to register again.
It does not mean campaign may be cancelled without payment before 45 days. It means I'll have the right to review it after 45 days to continue or discontinue this campaign. I mentioned it because most of the other campaigns on this board keep rolling automatically.