[Emergency] Disallow clients from adding free product to cart multiple times

[wdele]

Hello,

 

Emergency here. We currently use the following hook, which prevents people from purchasing a free product multiple times:

 

{can't paste due to CloudFlare...}

 

However, this is only triggered when the customer already has a product in their account. This doesn't prevent them from adding the same free product to their shopping cart multiple times!!

 

How do we prevent users from putting the same free product in their shopping cart multiple times?!

[vbatra]

better create a paid product with a one-time promo on "New Signups" and "Apply Once / Client"