No. But make sure that invoices from European countries other than Germany give the price without value-added tax.
No. Only fees charged by the publishers for processing open-access publications will be covered. Therefore, credit-card fees are excluded from funding.
In February of 2013, Freie Universität's Executive Board decided that the University will continue to support its members through the publication fund when the German Research Foundation (DFG) cancles the program in 2020.