Urgent: There was an error processing your order on payment

I just bought the plugin for a new website of mine webshop.zadelpascentrum.be, last week. After this weekend i saw no order coming in, and i tested this. (We are using well known plugin Mollie for payments). No payment method works here when activating the Multi Currency plugin. Once i disable it, it works again.

And now i seem to have the problem on another website too, horseathlete.com, where here it only seems to happen if the valuta is different (CHF) for example. Customer contacted me today explaining they get an error message.

“There was an error processing your order. Please check for any charges in your payment method and review your order history before placing the order again.”

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