Can't install F-secure VPN on Iphone 5
I have a F-secure VPN subscription for 5 units. I installed it on a Win 10 laptop, no problem.
Now I tried to install on my girlfriends Iphone 5.
Shed had a subscription that ceased. In My F-secure I registered her as 'someone else's unit' with email address.
When I send the email and she opens it it says 're-directing to Appstore'. Then, when I open F-secure in her phone it says 'subscription has ended' (the old subscription, that's ok). But when I try with new subscription I'm only offered new subscriptions, I can not choose the subscription I've already paided for, and that I believed was included in the mail link to her phone.
What to do?