Hey folks! Sorry for the late reply, I should have seen the questions in this thread a lot earlier.
The reason the game has been standing still for a while is because there were 3 random "big" investments one after the other 19 days ago (0.3 BTC, 0.1 BTC and 0.1BTC). After that, the transactions have been a lot smaller, which is why they have been taken some time to get paid out.
The 0.3 transaction has finally received his 0.33 BTC payout though, so it should be a little smoother from here once the two 0.1 BTCs are cleared as well!
We will soon implement a feature so that if someone send a high amount to early on in the game, we send back the money instead of having it delay future transactions.
Enjoy the game!