I can't change the company address. It's still my old address showing in the invoice. I change it in the acount and setting and also in the custom form style.

Hi there, 

I know how important it is for your invoices to display the correct company address. QuickBooks Online allows you to change the address quickly and easily from the company settings. Great job making that adjustment on your own. I'll help explain why you may still be seeing the old address on your invoices. 

When you update your company address in QuickBooks Online, your changes will affect any invoices created from that day forward. This will not change the address on previously created invoices or sales forms. 

If you're seeing the old address on your invoices, these invoices were likely created before you updated the address. If you're seeing the old address on new invoices you've created, I'd encourage you to reach out to our tech support team for further assistance. It's important that we make sure there's nothing else creating this issue. 

Have a nice day.