Advanced Form Designer: CSS Editor has a focus problem

For some reason the forms that I set up "Conditions" on will no longer let me make edits using the CSS Helper. In the picture you can see that even when I have clicked on a specific field, the CSS Helper on the right has everything highlighted (instead of isolating the particular field) and all the options at the top (i.e. padding, margin, width, etc.) are all grayed out (instead of showing active in green). I have already done the following:

-disabled the conditions on one of the forms

-deleted the conditions on one of the forms

-cleared my forms cache via My Account > Settings

-cleared my browsers cache and cookies and then opened a new browser window

-tried from 3 different browsers (Chrome, Internet Explorer & Microsoft Edge)

The form that I would like to use moving forward is "Clone of Payment Form" however I'm have the same issue with "Clone of Clone of Payment Form" and "Payment Form".

Any help would be appreciated. Thanks!

I had a look at your CSS code and there is an unnecessary bracket at the end of the code:

These brackets prevent the design tool to work properly. There are two of these, so please delete one of them and try again. If the issue persists please contact us again.

Cheers.