Can’t make orders with other currencies

Hi,

my website base currency is USD and i have curcy switcher,

i use another currency EGP, so when the frontend currency changed to EGP i can’t make orders as i get this error msg: paypal error (10605): transaction refused because of an invalid argument. see additional error messages for details. – receiving country does not support the transaction currency.

i know paypal not accepting EGP as a base currency but it should accept any currency and convert it to the paypal account holding currency so the problem is not in Paypal, the plugin should allow passing the currency to paypal normally as there is a lot of website use other currencies including EGP while checking out with paypal and works normally.

so how to fix this?