installer, then holo pets zip
You just pick one from them.
If you picked installer, then just let the installer extract it then run the HoloPets.exe inside (NOT the one inside bin folder).
If you picked holo pets zip, extract it manually then run the HoloPets.exe inside (NOT the one inside bin folder).
In any case, may I ask what’s happening when you said it doesn’t work? Does it not show anything? Are there any error popups?