Hi there! I understand you're having trouble accessing the LTMS portal through your eGovPH app on your Android device. Let me help you get this sorted out.

To start, could you please tell me more about what exactly happens when you try to open the LTMS portal in the app? For example:
- Does the portal fail to load at all, or do you get an error message?
- Are you able to access other parts of the eGovPH app without issues?
- Have you tried logging out and logging back in or restarting the app?

Meanwhile, here are some basic troubleshooting steps that usually help with portal access issues:

1. Check your internet connection: Make sure you have a stable internet connection (Wi-Fi or mobile data).

2. Update the eGovPH app: Since you are on Android 10 and using WebKit-based browser, please check the Google Play Store for any updates to the eGovPH app. Sometimes portal issues are fixed in newer versions.

3. Clear app cache: Go to your phone’s Settings > Apps > eGovPH > Storage and clear the cache. This can resolve loading problems without deleting your data.

4. Restart your device: A simple reboot can refresh system processes and network.

5. Try accessing the LTMS portal directly via a web browser: Open your mobile browser and visit https://portal.lto.gov.ph/ to see if the portal itself is up and running.

If after these steps the LTMS portal still doesn't work from within the app, the issue might be related to app-specific connectivity or account linkage.

In that case, please let me know:
- Are you signed in to your eGovPH account inside the app?
- Have you registered or linked your LTMS portal account with the eGovPH app?
- Are you receiving any specific error messages or codes?

Providing these details will help me guide you to more advanced troubleshooting.

Please give these a try and let me know how it goes!