@HISEnberg Hi, finally I've gotten back to you now. Thanks so much!
I don't know if I need to change something inside the HISE or JUCE project first.
After testing it again, I found that I got some errors about "MD_DynamicRelease" issues as I exported the AAX directly from HISE. So I re-exported it by opening the autogenerated project from Juce. I fixed from "MD_DynamicRelease" to "MT_StaticRelease" in Visual Studio 2022. Then it seemed to build successfully. Now the Pro Tools DEV detected the plugin.
But I wonder if there's a way I can directly export AAX from HISE.
When I do it on my MacBook, I find I meet the other problem. (AAX SDK 2.4.1, HISE 4.1.0, M4, Xcode 16.1, sequoia)
I can only compile the ARM version for the AAX plugin in Xcode, which warned me I could not compile the universal AAX for both Intel and ARM MAC.
Big thanks again, I believe that you must have experience with it.