The problem I am having is balance forwarding it's combining two invoices to what amount how do I turn this function off??. and I am on my Samsung Android .phone

Hi enricocaschera-y,

Glad to have you connect with us here in the Community. QuickBooks Online is a versatile program that enables you to manage your invoicing with peace of mind. I'll be happy to steer you in the right direction so you can get back to doing what you love. 

Based on what you've described, I recommend checking to see which transactions are affecting the balance forward. Here's how you can check this on your end: 

1. Navigate to the Sales tab and select the Customers section.
2. Click on the customer's name who has the incorrect Balance Forward.
3. From the New transaction (▼) menu, select Statement.
4. Within the statement: make sure the type is Balance Forward, select a Start Date that occurs before the customer's first transaction, and click Apply.
5. The customer's current Balance Forward will appear and should align with what's appearing on the invoice. You can click Print or Preview to see a full list of those transactions. Once you've determined which items need changed, click the X to close the statement and find the transaction in the customer's list. Use the Filter menu to quickly find an item if necessary.

By following the steps above, you can determine what's affecting the customer's balance. I encourage you to try this out and let me know how you make out. I'll be a message away in case you need additional assistance.