I understand there is a language barrier here. I think something else was meant by samples, considering that pre-made loops are not allowed. Probably sampled instruments, or something of the sort? It would not make sense for the FAQ to say first that premade loops are not allowed, and then that samples are as long as they are legal, if samples and pre-made loops were equivalent. Maybe it is your responsibility, as someone who acknowledges using only premade loops in your submission, to check with the owner of the jam if there has been a mistake.
I guess I mainly feel that this jam is perhaps not the place for an experiment like this.