Missing Hidden Fields

Hi,

I am wondering why hidden fields are not visible under the WPSyncSheets Settings tab in a forms?

I just bought the plugin as I thought this is only possible in Pro but it seems it’s not a feature at all at the moment.

Example:

[hidden gclid id:gclid-field]
[hidden utm_source id:utm_source-field]
[hidden utm_medium id:utm_medium-field]
[hidden utm_campaign id:utm_campaign-field]
[hidden utm_content id:utm_content-field]
[hidden utm_term id:utm_term-field]

I need to pass this on to the sheet as we are trying to optimize our Google Ads campaign.

Any idea how to solve this?

Regards
Elias