Have you already done the report? If not, you have two choices: Try to reschedule for today before you enter the report or redo the shop tomorrow if it can't be rescheduled.
If you have already done the report, don't panic yet. The shop may or may not be approved. I've seen it go both ways. If you get an email from QC, respond calmly and politely, not in an argumentative way. Best case, the shop will just be accepted. Second-best, QC will question you, scold you, and accept the shop. Worst case, the shop will be excluded and you won't be paid. But you will almost certainly not be dropped for one bad shop. It usually takes 3 mistakes, or more, depending on who you talk to and how serious the mistakes are.
One thing to keep in mind with MF: Fly under the radar as much as you can. The fewer times you have to talk to QC about possible mistakes and/or questions with shops, the better off you will be. This is JMHO, but, having shopped with them for 7 years, this is what I think I've learned.