Hey!
Some Megascans from Quixel have been discontinued, however, if you have previously acquired these assets, you can re-download them through Bridge and Megascans library until they are sunset. You will be alerted in advance if any changes occur.
For refunds, there will be refunds offered for eligible points that are in your account. For more information on this, please click here.
Any assets that you previously added to your Quixel account or downloaded from Quixel.com or Bridge will still be governed by the license that was in place when you got those assets. The assets claimed on Fab will be under the Fab standard license.
Here is another FAQ that you may find helpful.
Hope this helps!