1 image generation will cost 1 credit.
Image generation usually takes around 10 seconds.
You can always add credits to your account.
Yes, for the remaining credits, you can always request a refund.
Every cloud image stored on our servers will cost credits monthly. 1 image takes 1 credit per month, and when your all credits finish, we will send you an email warning your credits are finished. Next month after the warning email, our system automatically deletes your images stored in Luw CDN.