To resolve the issue of your Collectr app not connecting and displaying a message that you are not connected, follow these step-by-step solutions:

1. Check Internet Connection:
- Ensure your device is connected to a stable Wi-Fi or data network. Switch between Wi-Fi and cellular data to determine if the issue is specific to a particular type of connection.

2. Restart the App:
- Close the Collectr app completely by swiping it away from your recent apps. Then, reopen it to see if it connects successfully.

3. Clear Cache and Data:
- Go to your device's Settings > Apps or Applications > Collectr.
- Tap on Storage and then select Clear Cache and Clear Data. This may help in resolving temporary issues.

4. Reinstall the App:
- If clearing the cache and data does not work, uninstall the Collectr app. Afterward, reinstall it from the Google Play Store. This can sometimes rectify connection issues caused by corrupted files.

5. Disable VPN or Any Adblockers:
- If you are using a VPN or an ad blocker, temporarily disable them. Certain apps may have connectivity issues if these services are active - learn more.

6. Check for Updates:
- Make sure your Collectr app is updated to the latest version. Go to Google Play Store, search for Collectr, and install any available updates.

7. Review Account Credentials:
- Ensure that your login credentials for the app are correct. In some cases, old passwords due to updates may cause connection issues - learn more.

8. Reboot Your Device:
- A simple reboot of your device can resolve various connectivity issues. Restart your Android device and check if the app connects afterward.

9. Contact Support:
- If the issue persists after trying these steps, consider reaching out to the Collectr support team for further assistance.

By following these steps, you should be able to troubleshoot and resolve the connection issue with the Collectr app. If you continue to encounter problems, verifying settings related to your network connection and account on the official support page can provide more insights - learn more.