Theme Horse

Hi pam1,
There is not any length restriction. While adding the content on the editor there may be something issue. You may find a developer to fix the issue. You may check to our demo site and its working fine there. Once you deactivate all the plugins that you have installed in your dashboard and also if there is any custom css then remove it once and check it whether it works or not. While doing all this first backup your custom css file.

Thank you!