Problem instaling on macos

Hey guys, having problems here, installing OutSystems Service Studio on my macOS Sierra Version 10.12.6, file name OutSystems Service Studio-11.7.4 (Build 17634).dmg

It's reading as if I'm installing on a windows computer. You can check the error attached.

Even when I was saving the error, it opened up a windows saving screen... weird...

Ahh, it was also running the 32-bit version, and that I don't know if was mean to happen or not. I even tried unchecking the box os running as 32-bit in the "get information" part when you right click on the application.

Thanks in advance... and best regards!