A monthly or annual subscription is required in order to continue using Sideline.
Since you ported a number in, this number is yours to keep. You will not need to pay the port out fee if you decide to move onto another service after Sideline.
For instructions on how to port-out your number to another service, please check out our help site article,"Porting your number out of Sideline"
If you need further assistance or have any questions, please submit a request.