Buttons when adding media in Gutenberg are missing

Hello,

I have a problem with the plugin. When it is active the media block editor doesn’t display all buttons for adding image, only the button ‘Insert from URL’ can be seen.

The plugin is not working even with the default theme Twenty Twelve. I think the problem it’s from hosting, but I don’t know what to tell them to do. Maybe you can give me more information.

If I deactivate the plugin, everything works fine.

Do you have any ideas?