Hi Jeff,

Read tip 7 >> https://www.joomshaper.com/documentation/helix-framework/troubleshooting-faq#i-cannot-save-template-settings

Big short....

If you have enabled, disable Mod_Security in cPanel then go to Template Options again and try to save changes.

Later after doing changes you can enable Mod_Security again.

My cPanel does not have a way to disable Mod_Security.

I have been in the template settings editor a couple of weeks ago without a problem.

What could change to cause this error?

It doesn't happen on any other sites.

Guidance would help.

Ask Hosting Support if they can disable that for 1h.

If you didn't add any extra javascript in Custom Code - it shouldn't do anything "bad".