1) Got every time this error for master account: "The user needs at least one of the following permissions: Root >> Account Admin >> Space >> Subscription >> Subscribers >> Create" - im sure account have "Account Admin" permission.
2) When im trying to use my api client got 401 error, but all other features works ok.
could you please tell me your wallee Account/Space ID and explain what you are trying to do?
Where does this error appear, in your shop system? Can you create a screenshot of this please.
I will then take a look.