I couldn't pay all the bitcoins for my shares straight away but I sent the rest 3 days ago and emailed him but he hasn't replied and my shares are still on-hold, I am very worried that they wont be activated and I wont get the share multiplication and/or that I wasted my money all together.

EDIT: and before I sent the rest he was in contact with me, it was only until after I sent them all that he stopped replying.