Thank you for your feedback! We’re thinking about supporting multiple currencies, but for the time being, you can only invoice your customers in your own currency. However, they can then pay PayPal in their own currency, so you can have customers outside your own country.Jay commented
I also have the same issue as the OP. Paypal is not an ideal way for my business to operate.I am now looking at alternative software to invoice which is unfortunate as I really thought Office 365 was going to be a complete solution.