To check out your macOS version, you can:
- Select the Apple menu in the top-left corner of your screen.
- Select About This Mac.
- The macOS name and version number will be displayed in the window that opens.
You can also check your macOS version by running the command line
sw_vers in the Terminal app.4. It will be easier for us to investigate if you click “More Info” and share a screenshot showing all your Mac's specifications.