I got a business loan, an advance on some pending invoices. They expect the invoices paid back to them by the customer directly in Spring 2016. The customer paid me, by accident. About 7-8 months in advance.

I am thinking of investing the money in something I've been wanting to try, that there's a good chance I can double or triple it.

If I lost it all, what would the loaners do if they found out?
Also, I mean as long as they get the money that was owed they won't care if the customer paid me instead of them right.