Can you not send an invoice internationally with online payments switched on ,from the uk to the usa ? I am on the essential plan and multicurrency switched on ?

As I know QB Payment doesn’t support international payments. You need to use a 3rd party app to sync with it.

You can send an invoice to the USA with online payments enabled, but payments can only be accepted in your home currency. To process this, simply issue the invoice as usual, and when your customer pays, advise them to convert it from USD to GBP.
 

Additionally, you can view this helpful article regarding international payments using GoCardless: Accept international payments with GoCardless in QuickBooks.
 

If you have further questions, feel free to reach out. We’re always here to help.