What happened to the tabs in the ribbon on the top in my CRM?

What happened to the tabs in the ribbon on the top in my CRM?

Hi,

This morning all of the tabs (modules) in the ribbon on top are no longer showing up. I had the modules in the ribbon in a specific order for easy, one-click access. Now it's only showing the active tab and the rest are hiding under the three dots for "Other Modules". How can I get it back the way I had it?

Thanks for your help.

Kelly