Hi there,
Since this is your first post in the Community. I'd be glad to share info about the invoice you created.
Since the invoice is created in USD, the payment will also be in USD. Based on your description, you'll have to calculate what was paid in USD and apply it to the invoice.
Let me know if this answers your question. In the meantime, I encourage you to check more about multi-currency using the resource below:
Feel free to ask questions. I'll be here to help. :)