Hi,
Like Rose said you’re hitting the limit of number of variable, it seems the value isn’t increased, https://in.godaddy.com/community/Managing-WordPress/How-to-change-my-PHP-limit-max-input-vars/td-p/10706 contact your hosting if that still didn’t increase, so that they can increase that for you.
After that, change this http://take.ms/pqWG2 in the menu, that will do the trick.
Let us know,
Thanks, laranz.
