While we're working to unblock you, here are the steps (copied from the Wiki) to add more funds to your Morty account:
Adding Funds to Morty Account
To add funds to your Morty account, go to https://heliohost.org/donate/ and type in the amount (at least $5 or more) that you want to add. Once the transaction is complete, provide:
Your account username
The Transaction ID
Once an admin confirms the transaction, the funds will be added to your Morty account balance, and they'll update the thread to let you know.
The ability to add funds to your Morty account will eventually be built into the account dashboard, but there is no ETA for when this will be completed. Once this feature is available, it will be announced in the HelioNet News section, as well as elsewhere on our site and our social media.