Advanced payments can be made by simply adding funds to your account's credit balance.
Invoices (when due) will be automatically deducted from your account's available credit balance.
To add funds to your Hostdiode accounts credit balance:
Log into our client area: https://www.hostdiode.com/members/
Go to Billing --> Add Funds
Or if you are already logged in, simply click the following link:
https://hostdiode.com/members/clientarea.php?action=addfunds
