I've been looking if anyone has had a problem like this, but found nothing matching.
I'm the 3rd day user and probably I've misschosen any option - please suggest me what to do.
I'm trying to make a test payment - it calculates all ok, but total sum is 0.00 with every next action leading to "free checkout" etc. (This is a digital product).
What can I do with that?

Thanks for respond!