Some of Quixel materials are missing texture images in Fab

1- Today I noticed Quixel have added a few of their old items to Fab with price already set to $0.99., I thought the pricing would happen in January.

2- I tried to add these newly added items to library and got the following error

for those with price set.

Note that currently I own these in Quixel and I can also download it from Fab but cannot add it to my library, which makes me freak out since in Quixel I have access to 18863 assets (mostly material) but in Fab only to 17204 (missing about 1600 assets) which is 12 of those missing are used in my projects

3- I have a few of Quixel materials in one of my project. When I tried to change their references to Fab, I noticed some of texture images are missing. At the moment I’m not sure how this will affect quality of material in my project. probably not much, but I rather not risk it.

This is just an example of one material, this is from Quxiel and this is the same material from Fab.

In following screenshot, Left is the from Quixel bridge and right is from FAB and as you can see Specular, Gloss, Bump, Base color, … is missing (ignoring the name changes of course). Also note that file sizes are different too and even contents of images are changed (compare Displacement for example)

I hope this is a bug and will be fixed, otherwise, a document or tutorial for how to migrate Quixel material to Fab version will be required.