Hi there! I'm Frank Taylor, and I’m here to help you with the issue you're experiencing with the FlexJobs app not opening. Let's see if we can get this sorted out together.

To start, could you provide a bit more detail? Are you seeing any error messages when you try to open the app, or does it simply fail to launch? Additionally, have you recently updated the app or your operating system?

In the meantime, here are a few common troubleshooting steps that you can try:

1. Check for Updates: Make sure both your OS X and the FlexJobs app are updated to the latest versions. Sometimes, using outdated versions can lead to glitches.

2. Restart the App: If you haven't already, close the app completely. Take a moment to ensure it's not running in the background and then try launching it again.

3. Reboot Your Device: Sometimes, a simple restart of your Mac can solve unexpected issues.

4. Reinstall the App: If the above steps don't work, you might want to uninstall the FlexJobs app and then reinstall it from the App Store. This can help resolve issues related to corrupted files.

Let me know how these steps work out for you, or if there's anything specific happening when you try to open the app!