Hi there! Sorry to hear you're running into that "oops sorry for inconvenience" message when trying to complete a trip request on the MTM Link Member app. Let's see if we can get that sorted out.

First, just to make sure we're on the same page:
- Are you using the app on your Windows device through a browser, or is it a dedicated app?
- Have you been able to complete trip requests before, or is this the first time you see this error?
- Also, have you tried refreshing the page, restarting the app, or checking your internet connection?

While I wait for your answers, here are some quick steps you can try that often resolve such issues:

1. Refresh and Re-login: Sometimes, session glitches occur. Try logging out of the MTM Link Member app, close it, then reopen and log back in.

2. Clear Browser Cache: Since you're on a Windows device with a WebKit browser, clearing your browser's cache and cookies might help. This removes old data that might cause loading errors.

3. Check Internet Connection: Ensure your connection is stable. A momentary drop could cause failures in sending your trip request.

4. Update the App or Browser: If you are using an app, make sure it's updated to the latest version. For browsers, ensure your WebKit-based browser is the latest version.

5. Try Another Browser: If possible, try accessing the portal from a different browser like Chrome, Firefox, or Edge to see if the error persists.

Let me know what you've tried so far and any extra details. I'll guide you further based on that!