A major issuer of cryptocurrency debit cards since 2018, payments processor Wirecard starting coming apart in mid-June, when the Financial Times reported that its shares had fallen by more than 60% after the firm’s auditors warned that €1.9 billion (nearly $2.23 billion) was missing from its accounts. Before going into bankruptcy in late June, the fintech firm had been a big success, with operations far beyond the crypto business earning it a place on Germany’s prestigious Dax 30 stock index.