[Barclaycard] Unable to use test credentials: «The data you entered is not correct. Please retry.»

I have followed the instruction [Barclaycard] How to get a test account?, but the test credentials are invalid.

I have got a response from the Ingenico ePayments support (it looks like Ingenico ePayments develops and supports the Barclaycard payment service):

I have reconfigured your test PSPID so that it’s under our white label partner, ePDQ.
I have reset your password and you will shortly receive a separate email requesting you to change your password.

I think, the bug is happened because Ingenico ePayments,PostFinance, and Barclaycard use the same merchants database.