"Selling" Tobacco/CBD online for pick up with no payment processor involved

General question that Squarespace corporate didn't want to give a firm answer to (understandable).

I have a client who is looking for me to develop a site that allows customers to order CBD/Tobacco products for pickup. There is no payment processor involved because every sale will be run through their POS at the store that also swipes ID and verifies age. 

This would essentially be a commerce site that charges nothing for each item, then gets the order, puts it together for pickup and then takes payment in store after verifying age. It makes sense to me that there wouldn't be a problem if no money is being exchanged through SquareSpace's platform, but I may have a novice understanding. 

I understand that I will have to age gate the site, which is not a problem, I just want clarification whether it would be likely in violation of ToS for SquareSpace. 

Does anyone else know of CBD/Tobacco sites on SquareSpace? OR a similar situation? 

Thanks in advance!