Not sure about deposit, we made dozen of tests and all works fine, I have PM meccoin4me to try to solve his issue.
About investment, it needs more players, more EAGS to flow, it works like this:
For example if there is 9000EAGS in main(house) account balance and you invest 1000EAGS you will profit 10% or lose 10%, so if someone play and lose 100EAGS you will get 10EAGS, if win 100EAGS your profit of investment will be -10EAGS.
This example is if only one person invest, but if there are many count is the same, so if there is 10000EAGS in house account, 5 person invest, 3 person 1000EAGS each, one 3000EAGS and one 4000EAGS, profit will be shared this way: house 50%, 3 person 5% each, 15% and 20%.