Setting up my Lebara account

Hi everybody,
I have logged into my Lebara account and it has asked for my Lebara number to send a verification link to set it up, I am moving from another network, do I wait for my old number to move over and put hat in, or put in my temporary Lebara number in?

I’d wait till the portin has been done,and everything is working with the number you wish to keep ie your old number. All the best