I was going to suggest all the restarting process but some people already mentioned it. Did you tryed to go back to Metahuman Creator, make a small adjustment and then return to check if it is avaiable?
Just open quixel bride inside UE5 and keep it open while you run metahuman on your browser just take a bit a of time, then just reopen bridge the one that is inside UE5 , its works for me, this just take a bit of time to refresh library
I was experiencing the same problem. My problem was that my UE version was 5.3 and I was opening MyMetahuman site in 5.4, on the first opening windows, I changed the version to match my UE version (5.3) . I reopened Quixel Bridege and my metahuman appeared!
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