Abandoned cart button doesn't load the cart when click on it

[gonzaloebiz]

Issue Description

Preconditions

1. Any version of magento with sample data and varnish
2. mc-magento2 10x.x.60
3. Configure the abandoned cart email in mailchimp
4. Configure the extension to save the email in the cart

Steps to reproduce

1. Add a product as guest
2. Abandon the cart and wait until receive the abandoned cart email
3. click on the button in the abandoned cart email

Actual and Expected result

Expected result:
    Open the store and load the cart
Actual result:
    The cart is not loaded