If that's not it I'm unfortunately not sure what the issue is here!
I checked my own account on a computer set to 12 hour time and it appeared to be working as intended in 12 hour time:
My best guess here is that it's still something related to your computer's settings, though I'm not sure what the solution may be.
You could try togging the setting from 12 back to 24 hours and then turning the computer off an on and trying again - I'm not sure if that will fix things, however it's what I'd try next if I was having the same issue. Another way of possibly isolating the issue would be to see if you can log in on another computer (if you have one around) to see whether the calendar defaults to 245 or 12 hour time on a different computer.
If this doesn't help I recommend getting in touch with our support team for further assistance - they will be able to imitate your dashboard, which is something we're not able to do via our Seller Community forum. You can call our support team on 1800 760 137. Lines are open Mon-Fri, 9am-5pm Melbourne time. Or, contact us via online chat or email:
1. Sign in to your Square account
2. Head to our contact page https://squareup.com/help/au/en/contact
3. Go to "Other"" then "I don't see my issue"
4. Click "Message us" or "Email us"
Please let me know if you are able to get a solution to this from testing or support, it may help other sellers with similar issues in the future 🙂
