Remember that it is only possible to register up to five (5) devices per account. However, only two (2) simultaneous active sessions are allowed.
To log out of your devices, we recommend you take the following steps: First change your password from your profile and log in again. So when you log in on five other devices, your previous sessions will automatically expire and you will lose access.
I hope this information is helpful to you. Please do not hesitate to contact us if you have any other concerns, questions or comments.