Log in to https://app.wipperoz.com/en
Go to "My wips > Customer dashboard" using the grey dropdown menu on the left.
Find the Wip related to the received quote/s.
Hit the "View quotes" button, you will be redirected to the quotes related to the Wip
Hit "Approve quote" button to accept the quote, the other quotes will be cancelled and an email with the supplier's details will be sent to your inbox and another email with your details will be sent to the supplier.
Note: Check if you have any message on the wip or private messages on the quotes before taking any decission.