Road to rank problem

The problem I'm having is gaining the ability to play rank I did the challenges for road to rank but after a while it reset my progress and I can't gain any it won't let me finish certain missions and I can't play rank what do I do. I completed the Marksman I completed the pistol and I was seven out of 10 for SMGs and one out of 10 for the rifles and I just won a game had enough kills to finish the assault rifle one and no progress my username is nuggy469

Please help me with this problem