2 achievements have glitched on me and need help

So about a week ago I started playing Plants vs Zombies, the arcade version that was a Games with gold title, on my Xbox one. At this point, I should have unlocked every achievement in the game, however, two of the achievements glitched on me both on July
31st, aka 6 days ago from this post. These achievements were the Crash of the Titan (defeat your 1st gargantuar) and Home Lawn Security (clear adventure mode). Considering I have all the other 10 achievements which some of them require these two achievements
to be completed means that they definitely have been fulfilled and just have not been recognized by either the game or Xbox live. The strangest part about this though, is that while I was playing on my One, the achievements popped, which I remember occurring
but when I checked the achievement app on the Xbox one they are still locked for me. Now this is where it gets weird....on the One when I go to the game’s achievement tab which is in Plants vs Zombies, which looks like a trophy in the game which shows its
tracking of your achievements, it has all the achievements unlocked and to add to this, when I press the select and start buttons which on backward comp games brings up the Xbox 360 view of that game’s achievements, this also has all achievements as unlocked.
When I load up the game on my Xbox 360, I get a completely different story though, the home screen achievements tab shows 10/12 as well as Plants vs zombies achievement tab in-game. Am I s.o.l. or is there some way to rectify this?

PS: sorry for the long post, just wanted to be thorough

:)

 

343 industries

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Can you please help?

 

For anyone who actually reads this, I have tried just about everything I could think of to already fix this. Completed both the achievements’ requirements again, both on Xbox one and my Xbox 360. Deleted and re-installed the game. Cleared the cache on Xbox
360, then I completed the requirements. Removed profile from my 360 and one and re-installed. Completely deleted any type of file associated with them game, aka save files, and complete the requirements. Still nothing.

 

Hi! Also have a look at this thread which covers this topic: Achievement Unlocking Issues? -- CHECK HERE!!

 

Looked over and followed the thread twice on both my one and 360 to see if that hopefully fixes the achievements. So far nothing but only day 2 of waiting so hoping for the best but probably s.o.l.