I was having the same problem, but I was able to make it work. First I had my hosting company adding a script on the htaccess file.
<IfModule mod_env.c>
SetEnv MODSEC_ENABLE Off
PassEnv MODSEC_ENABLE
</IfModule>
Not sure if the script made a difference or not…. but then I saw at the top (top right) a link that says “clear all forms”. So I cleared all forms and created a brand new one. Made the changes I needed to make ( colors, fields) saved it and checked the form on the web site and it is showing up just fine.
Give it a try.
