Data not visible in UE5 Quixell Bridge when using a proxy server

We are using a proxy server, going through a limited web filter, and using it in an environment where only a few Internet can be used, such as Unreal and Quixel Bridge.
I opened Quixel Bridge in UE5 and put my proxy server information in preferance.
Now the bridge seems to be working normally, but when I click on the data inside, only a black screen comes out.
Standalone Quixell Bridges are all OK.
I would like to solve this problem.
Please help