I'm afraid you can't. Even if you buy NFT Collection Maker PRO without the Standard Version, you will not be able to login.

Here is why:

1. NFT Collection Maker Standard is the main product which is either a Monthly, Yearly or One Time Subscription.

2. NFT Collection Maker PRO is an Upgrade or Up-sell which adds the PRO features in your NFT Collection Maker account.

3. Since NFT Collection Maker PRO is not independent, you will need to subscribe for the main product NFT Collection Maker Monthly, Yearly or One Time subscription first. Else you can't login with only NFT Collection Maker PRO in your account.