Hello, i need help maybe someone experience the same. Received payments always come on diff account which is not related, how this happen?

Hello. ramy-wali-thepea.

Do you mean that after you record the receive payment, it is posted to a different account? If so, you'll want to check the assigned account in the Deposit to field. This might be the reason why your payment goes to that un-related account. 

You can follow these steps to verify:

1. Go to Sales  > Customers.
2. Select the customer's name and click the Receive payment.
3. In the Receive payment page, check the account selected from the Deposited to field. Change it if necessary. Tip: You can put the money directly into an account, like your current account, or select Undeposited funds if you need to group the payment with others.
4. Click Save and close. 

Please see this sample screenshot:

Once done, the account selected from the Deposit to field will be made default unless you change it to a different one. 

I have these articles more information: 

• Record invoice payments in QuickBooks Online. 
• Deposit payments into the Undeposited Funds account in QuickBooks Online

If you're referring to something else, please leave a reply below and I'll get back to as soon as I can. Thanks.