Not seeing my VIP stars move up

You'll want to post in the Xbox Rewards Questions support forum in order for support to check into it for you. Keep in mind that subscriptions, in-game consumables, and preorders do not count towards VIP.

Hello Cryptic Flair,

I can confirm that this is a glitch, not necessarily with pre-orders, but with MyVIP progress calculations. We are working on deploying a hotfix for this issue, and should have the problem resolved by the end of the month. Due to this error we have also
delayed payback for September purchases, so if you were curious about the status of your September payback, that should also appear as pending by the end of the month. Apologies for the confusion.

Note: doing the calculations again with the percentages, it seems that only one of the pre orders has backtracked. When I was 91% last time, I pre ordered Resident Evil 7 Ultimate to get the last $90 I needed to rank up, which I did, and now it seems the
system unrecognized it.

There's nothing to opt in to for VIP. Anyonr who signs up for the rewards program is automatically enrolled. VIP status is based on your star levels (how much you spend in the marketplace). You can check your VIP status on the MyRewards section of the site.
You can see how much you need to spend for each level at http://rewards.xbox.com/terms-and-conditions

Hello MenTaL9R,

You are looking at your VIP progress. The email you received was for an additional VIP star offer, and if you go to your MyRewards page, you will see a separate tracker for that offer. As it says on the FAQ and on that tracker, you will not receive your
additional star until March.