I am using an Intel Macbook running on MacOS Sequoia 15.7.4.
I couldn’t launch the designer after downloading and installing from the gateway. After some debugging I found out the download is packaged with an arm64 java runtime, incorrectly identifying these machines.
@MacBookPro ~ % file '/Applications/Designer Launcher.app/Contents/Resources/runtime/bin/java'
/Applications/Designer Launcher.app/Contents/Resources/runtime/bin/java: Mach-O 64-bit executable arm64