Does Inbox Dollars do okay with downloading multiple games at once...?

I tried an app before (can't remember the name), and if I did more than one "download this app and reach level whatever for this much money" at a time, I had to frequently contact support and prove I did it, because it worked best doing one app at a time.

Does anyone know if I can do 2-3 apps at a time with ID, or does it also have trouble automatically rewarding you when you finish them?