Answered question
I would really love to try fizz Internet, I’ve heard good reviews! How can I get an invite?
By invitation only right now. New rounds of invites have been sent out lately so just be patient.
Other answers
Unfortunately right now it's up to Fizz to invite you to try if you are already a mobile subscriber, there's no way to apply for an invitation.
The invitations are randomly sent by Fizz.The only thing you can do is ...wait.
It should be waiting for their invitation.