I'm here to help ensure you only have one account for QuickBooks Self-Employed. As an initial step, you might want to choose which account to use first and cancel the other one:
Additionally, you can visit this write-up to know more about this program. This will provide you more details about features and options available in each QuickBooks versions:
Let me know if you need more details about QuickBooks accounts or if you have any other concerns. I'd like to make sure this is resolved so you can start running your business. Have a great rest of your day!