Error "Resource Not Found for Api Call:" when try to access batches grid

[gonzaloebiz]

Issue Description

Preconditions

1. Any version of magento sample data is installed.
2. mc-magento2 10x.x.57.
3. Connect to a mailchimp store and wait until de store is completely synced

Steps to reproduce

1. Stop the cron to avoid problems
2. Delete the current mailchimp store
3. Create a new mailchimp store and assign it to the magento store
4. Open mini shopping cart and click "Proceed to Checkout".
...

Actual and Expected result

Expected result:
See the grid without problem
Actual result:
The grid return **Resource Not Found for Api Call: https://us15.api.mailchimp.com/3.0/ecommerce/stores/7xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx - The requested resource could not be found.**