Alternative commenting

I’ve made an alternative comment compoI’ve made a different kind of comment feature, but I just can’t get the bottom two lines to disappear.
I’ve read about “read only”, but can’t find it.

What do you mean by “alternative”? Do you mean the use of your form container?

If you want to remove the “comments are restricted” part, you have to be on a paid plan to use CSS.

form[class*="form-disabled"] {
display: none;
}

Yes to use of form container.
I am on a paid plan.
Have tried to insert the css, but it stil show

You must enter that in Settings > Appearance > Custom CSS and enable “Preview Custom CSS”.

The field you’re showing is for assigning custom CSS classes, not for the actual code.