This module allows you to connect to a customer account on Prestashop 1.7
https://www.team-ever.com/prestashop-module-connexion-en-tant-que-client/
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Install this free Prestashop 1.7 module to connect to any customer account This module can be downloaded here
You can connect to a customer account from an order in the administration of Prestashop. By viewing the page of a customer from the administration of Prestashop, you can also find a button to connect to the customer account. A new tab will open to control data and security, and you will be redirected to the customer's "My Account" page.