"Debugging and troubleshooting", "List of MyChat Client errors", "Error #0330".
 
Error

Error #0330: not enough rights to delete own account
 

Error description

You cannot delete your account directly from the client application, because this is prohibited by your group's rights.

 
Problem solution

Enable the rule 248: "Profile", "Allow deletion of your account" in the group's rights or transfer the account to a group where this rule is enabled.