Typical Helioskrill / Service record problems

So, as many people have, I beat all of the MCC to get the Helioskrill armour set, however even though I (think) I have the achievement for finishing Halo CE my service record shows 6 levels I “haven’t” completed. Also I have attemped to complete the levels again with no indication on the service record for the second time (the second try was a few months ago). Is there anything I can do? (sorry for bad grammar btw)

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> So, as many people have, I beat all of the MCC to get the Helioskrill armour set, however even though I (think) I have the achievement for finishing Halo CE my service record shows 6 levels I “haven’t” completed. Also I have attemped to complete the levels again with no indication on the service record for the second time (the second try was a few months ago). Is there anything I can do? (sorry for bad grammar btw) EDIT I don’t have the achievement I wrote about even though I finished Halo CE.

I think I used the bandanna skull

Pretty sure any ‘cheat’ skulls will affect difficulty completion but will be okay for score + par time.
Try speed running one level without any skulls and check if that registers on Waypoint.