Some Web Firewall filters may require your attention to work fine because they check for patterns that may be present in certain attacks but also in legitimate queries.
If you have a lot of sites and no time to configure each one, if your site is commercial and you don't want to be worried about this or if you have no idea about security, you should apply an 'Easy config' to the Web Firewall.All you have to do is to click in the button.
With 'Easy Config' you will set a conservative configuration in the Web Firewall by disabling the filters which may require a higher attention to avoid false positives: a little bit less secure but more functional.
'Default Config' will restore your previous configuration, with all filters enabled and your own exceptions included.
(Each button will be automatically generated depending of the config applied)