Customize section in conflict with plugin

Can you help me to understand why the section “customize > colors” doesn’t work? Maybe is it in conflict with any plugin? I’ve just uninstalled jetpack, but I still cannot use the “customize > colors”…
How can I solve the problem?
Thanks in advance

Well, try the other plugin except the ones recommended by the theme. You don’t need to uninstall them, just deactivate them until you found the culprit. The theme uses the standard way of adding options to the Customizer.

Thanks a lot