You're almost there, but if you're seeing this message it means you need to text 'PERSONA' to 87474 to view the appisodes.
It's only £1.50 but that gives you access to not only Season One, but all of Persona for the next 12 months!
Enjoy.
If you've already signed up but can't access the appisodes, first of all try turning it off and on again...
If that doesn't work you may need some more specific help, please contact laura@app-media.com for some lovely technical support.