Hi there! I can understand how frustrating it must be when the Arvest Go app isn't connecting, especially when your internet is working. Let's troubleshoot this together.

1. Check for App Updates: Make sure that your Arvest Go app is updated. Sometimes, if the app is not updated, it might cause connection issues. You can check for updates in the App Store on your Mac.

2. Restart the App: Close the Arvest Go app completely and then reopen it. You can do this by using Command + Q to quit the app and then relaunch it.

3. Check Internet Connection: Even if your internet seems fine, it’s good to double-check. Open your web browser and try visiting a website to ensure browsing works properly.

4. Restart Your Device: A simple restart of your Mac can help resolve temporary connectivity issues as it refreshes the network settings.

5. Clear App Cache: If you're familiar with clearing cache, you might consider doing that for the app. However, this usually requires some additional steps and can vary depending on app design.

6. Server Status: Sometimes, the issue might be with Arvest’s servers. You can check the current status of their services on websites like Downdetector. This will tell you if others are experiencing similar problems.

7. Contact Support: If none of the above steps resolve your issue, consider reaching out to Arvest Technical Support at (844) 225-8347 for further assistance.

Have you tried any of these steps already? Or is there any specific part you’d like me to assist you further with?