ScaleChamp is a mostly prepaid service, so you prepaid the service and each hour amount based on service usage is charged from project account.
Yes, full refund in case of no credits spent on services and partial refund in case of some credits spent. Only 30 days since payment made.
We accept everything that is accepted by our payment service provider "Paddle.com".
For customers in EU, VAT will be charged at the time you refill project balance by "Paddle.com".