What do you mean by “windows device with other apps”?
I meant that My iPad is able to connect to the windows device with other apps installed on that iPad, like RD Client or Nplayer. This proves that the local network is fine.
Indeed it cannot discover the spacedesk server via the IOS app, but H5 version works without a problem.
I initially suspect that this problem is related to the iPadOS beta version, so I tried with my iPhone, which is on iOS 14.7.1, and it did not work either. But the only Apple device working so far is indeed running iPadOS 14.7.
As for the dxdiag info, I did not find a dxdiag.exe in the installation folder. I run “dxdiag.exe” directly from windows and the output file is attached.
Thanks for your help!