The basics. What Cashierfu keeps about you, where, and why.
Nothing that names you. The door and the shops' pages are read without an account. No advertising network runs here and nothing follows you to other sites.
Two at most. Your place, when you set one under Near: the postal code or town you typed and how far out you want to see, kept in your own browser for a year so offers can be ordered by how soon they reach you. Clear the box and it is gone; it is never written to a record of yours or anyone's. Your sign-in, once you have an account: a session so you stay signed in. That is all.
An order holds what you bought, the address it ships to and how to reach you about it. The shop that sold to you keeps that order, since the shop fulfils it; Cashierfu keeps it too, to run the order and show it to you under You. Payment is taken by Stripe; neither the shop nor Cashierfu sees your card number.
Your email address and the name you give. They let you sign in, see your orders across every shop, and follow the subjects you care about. Nothing is sent to you that you did not ask for.
A shop sees the orders placed with it. Cashierfu sees what it needs to run the till. Nobody else is given your details, and nothing is sold.
Write to hello@cashierfu.com.