Why you might have an amount left at store
Some providers require only a deposit online (to secure the slot) and collect the rest when you arrive. Others let you choose Pay in person at checkout, in which case the full amount is collected at the store.
In both cases, your booking detail will show a Left to pay at store row with the exact amount still owing.
How it works at the appointment
Check the amount before you arrive
Open the booking from /shopper/bookings and note the Left to pay at store figure.
Pay the provider directly
On arrival, pay the remaining balance by card, transfer, or cash — whatever the provider accepts.
Provider marks it paid
Once they confirm receipt, the booking's payment status updates to Paid and the Left to pay at store row disappears.