I'm afraid you can't. Even if you buy Motioney Agency/Enterprise without the Standard Version, you will not be able to login.

Here is why:

1. Motioney Standard is the main product which is either an Yearly Subscription or Monthly Subscription.

2. Motioney Agency/Enterprise is an Upgrade or Up-sell  which adds the PRO features in your Motioney Software.

3. Since Motioney Agency/Enterprise is not independent, you will need to subscribe for the main product Motioney yearly or monthly subscription first. Else you can't use Motioney with only Motioney Agency/Enterprise in your account.