The store threw in a cheap universal remote and it did not work. So now I'm up to 2 non-working remotes...please see hell gig comment above. I wanted absolutely the best chance for a working remote.
You should be able to get Marantz to replace the one you just ordered from them.
In regard to the cheap universal, can you still return the whole open box deal and get another one?
If not, then you are going to have to wait for the Marantz replacement (remote), or buy another universal to try. If the replacements still don't work, the AVR itself could be the problem too.