How to charge the phone bill with healthy coins in craigslist account? It seems that only the main account can be changed. How can I divide the accounts?

The sub-account of the questionnaire cannot be recharged. Only the main account can recharge the phone bill. The master account must be a member registered for more than one month. The health coins in the sub-account can be exchanged for gifts and cash on the website (5 health coins =5. 1 RMB).