I have the One-Boat app on my phone, and I’ve paid for a yearly subscription to the maps. Everything works .. no problems.
I put the app on my iPad and signed in with the same account. I click “my subscriptions” and it doesn’t show anything. My only choice is to start a free trial again.
Is the subscription not shareable across multiple devices?
edit: found the problem. Same account with Humminbird on each but two different iCloud accounts.