Hi Marisa Faustino,
I would be happy to help you with the IGB installation procedure.
If you are seeing the "Integrated Genome Browser Installer" in the top left then there should be a Setup window like the one below:
If the Setup window is not appearing, then please try to re-download the installer from
https://www.bioviz.org/download.html.The file should be called IGB_macos_current.dmg and should be about 155 MB.
When starting the installer, right-click and select Open.
Please let me know if this doesn't work. The installer is currently working on my Mac (Ventura 13.5.1), but I am on an older Intel based Mac. Does your Mac have an M1 or M2 processor?
Best,
Nowlan