How do I know which version of the test dashboard I am using?

Summary
Dashboard version 1
Dashboard version 2

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Dashboard version 1

The URL of the first version of your dashboard (V1) looks like this:
https://sandbox-backoffice.lemonway.fr/[ENVIRONMENTNAME]/login

The login page will display the following image:

Once logged in, you will be taken to your general dashboard:

Dashboard version 2

A new version of your dashboard (V2) was released in January 2020.
The URL of the second version of your dashboard looks like this: 
https://sb-bo.lemonway.com/[ENVIRONMENTNAME].

N.B.: The [ENVIRONMENTNAME] variable in the URL of your V2 dashboard is identical to that of your V1 dashboard.

The login page will display the following image:

Once logged in, you will be taken to your general dashboard: