Hello,
Robert, I asked if you were only using WC Vendors free because the dashboard you are showing in the screenshot is the WC Vendors free dashboard. It is much easier to hide the paypal address field (and a different method is used) if you want to hide it in the Pro dashboard.
If you guide your vendors to the page that has the shortcode for the WC Vendors Pro dashboard instead of the free dashboard, then all you have to do is check the checkbox on these two settings pages to hide the paypal email fields:
wp admin > woocommerce > wc vendors > settings form
and
wp admin > woocommerce > wc vendors > signup form
On those pages there is a checkbox: PayPal Email
check that on those pages and it will hide the paypal email field on the pro dashboard and the vendor signup/application forms.
To TOTALLY hide the paypal email on the free dashboard I think you have some lines to remove from a template… so if you decide to keep using that dashboard, let me know and I’ll find the lines..