What is Wrong with my campaign service record?

I was playing through Halo 2 on legendary and I went to look at my service record on waypoint and they either say all the same completion time and some of the levels aren’t showing up as completed even though I played through them. If anyone can help please help

I beat 4 on MCC and it is nowhere to be seen.

Same thing with my stats on Waypoint. Worst thing is a couple of weeks ago my online stats became bugged. The game added ~5k kills, ~2k deaths, ~450 wins and like 50 hours of playtime. 343 has some explaining to do, my k/d has dropped over 0.6!

I made a thread about it but never heard back anything, and doubt I ever will. Its 343, what do you expect?