Hi there! It sounds like you're having some trouble combining items in Infinite Craft. Let’s see if we can sort this out together.

Could you provide a little more detail about the specific items you're trying to combine? Sometimes certain combinations won't work due to the game’s mechanics or because the items may not be meant to combine.

Here are a few things you can check to get started:

1. Compatibility of Items: Make sure the items you're trying to combine are meant to be combined. Some items might not have a known combination in the game.

2. Clear Cache: If you're experiencing this issue frequently, it might be helpful to clear your browser's cache. This can sometimes resolve glitches in web-based games.
- You can do this by going to your browser settings, finding 'Privacy and Security', and then looking for 'Clear Browsing Data'. Make sure to select cached images and files.

3. Update the Game: Ensure that Infinite Craft is updated to the latest version, as developers often fix bugs that could affect functionality.

If these steps do not resolve the issue, let me know the specific items, and I'll look up more information to help you.