Troubleshooting Handling External URLs
When accessing tiny OpsGenie URL links in the form opsg.in/o or opsg.in/i/ from anywhere in your Android phone, you will be prompted to open the link with the OpsGenie app
If by mistake you choose to open the URL with the browser app you may not be asked which application to use when opening the link again.
In order to remove the assocation between the app and the URL you should go to Settings > Applications > The browser app you use > Open by default > Clear Settings
After applying these steps you will asked again which application to use with the OpsGenie tiny URLs. Make sure to pick OpsGenie