This looks to be quite the IT issue. Have a similar issue. Stored all my points in my SPG account. Even though I have a linked Marriot account it created a new marriot account and did the 3x multiplier and put my point in there. Plus I did a refund on a Ritz reservation for the pricing change and I have a bunch of point there as well. They are likely having issues merging your "new" marriot account created from the SPG account and your own marriot account.