The test environment for clients is named EUA.
The user roles in EUA do not inherit from the one set in Production. User configuration in EUA is independent from the one in Production.
You need a Connect EUA Account to access to MyEuronext EUA (Tip : create your Connect prod account. The day after you will be able to use your Connect prod credential in Connect EUA).
For Member domain :
The link to EUA is available from Connect Production.
You can also directly access to Connect EUA here, and MyEuronext EUA here.
For Issuer domain :
Access to Connect EUA here, and MyEuronext EUA here.