Hi there! I understand that when you click on the basket in the SNCB/NMBS system, you only see the option for Train tickets and not the MultiTicket option. Let's get to the bottom of this together.

To help you better, could you let me know if you are trying this via the SNCB/NMBS website or through their mobile app? Also, are you using the latest version of the app or browser? Sometimes missing options can be caused by outdated versions or specific steps in the app flow.

In the meantime, here’s a general approach to try:

1. Check Ticket Purchase Flow:
On the SNCB/NMBS app or website, when you start the purchase, look carefully for a “Show all” or “More tickets” option in the ticket selection screen. The MultiTicket often appears there rather than directly in the basket.

2. Re-select Your Ticket Type:
Sometimes the basket only shows tickets you've actively selected. Make sure you’ve explicitly added a MultiTicket product before viewing the basket. On some interfaces, you need to select MultiTicket under the "Buy a ticket" section before it appears in your basket.

3. Clear Cache or Try Another Browser:
Since you mentioned you're on Windows with WebKit, if you’re using a WebKit-based browser (like Chrome or Edge in some modes), try clearing browser cache or switching to another browser. Sometimes cached data can interfere with updated menu options.

4. Update or Reinstall the App (if on Mobile):
If you’re using the SNCB app on your mobile device, make sure it’s updated. MultiTicket options have been impacted before due to bugs or payment method issues. Reinstalling can refresh the app's available options.

5. Check for Account or Payment Issues:
Some users have noted MultiTicket options are hidden if there’s a payment method problem or account discrepancy. Double-check your payment settings or try a different payment method.

If these steps don't bring back the MultiTicket option, please share more details like the exact steps you're taking or any error messages you see. That will help me guide you deeper into the solution.

Are you using the official SNCB app or the web portal? And do you see any “MultiTicket” or similar words anywhere before the basket?

Let me know, and we’ll take it from there!