Sorry you're having trouble connecting the app on your Mac. Please reach out to our support team at https://www.goldenfrog.website/support and we can assist you with resolving this issue.
You can also send the logs from the app from your Mac so we can investigate them as well. Open the application, then click Help on the menu bar at the top and then click "Contact Support". On the next window please make sure the "Include Application Logs" checkbox is ticked, then click Email Support. This will send us the logs.