Hi ​@Aliceo, 

Thanks for your post. I do apologise that you are unable to upgrade. 

If you’re on a SIM-only plan, you’ll need to be eligible for an upgrade before the option becomes available in the app. If the “upgrade now” button isn’t responding, it may be because your account isn’t currently within the upgrade window or the option isn’t active yet.

For further assistance and to explore available options, we recommend contacting our Sales team on 0800 049 0250, where they can check your eligibility and guide you through any available upgrade offers.

If you need any further help, feel free to let us know.

Owethu