Adding credits to your account:

To access additional credits beyond your monthly balance, please toggle on the Additional Spend button found in the Billing tab of your Luma app account.

Select Manage Limit to set a budget based on your needs.

Please note: Each additional credit used beyond your monthly subscription balance will be billed at a rate of $0.003 per credit. Your account will be capped once you've reached the limit of additional credits based on the dollar amount you've selected.