"BERLIN, April 21 (Reuters) - Deutsche Boerse said on Wednesday it would delist the shares of cryptocurrency exchange Coinbase Global COIN.O from its Xetra trading system and the Frankfurt stock exchange by end of Friday's trading session. "The reason for the delisting is a missing reference data for these shares," Deutsche Boerse said, adding the delisting would apply until further notice." https://www.nasdaq.com/articles/deu...ase-from-xetra-and-frankfurt-trade-2021-04-21
AFAIU, it is a bureaucratic snafu listing the shares. Once the reference number is applied for, COIN will be relisted.
this is temporary, they will be listed. In the meantime, Coinbase shares fell 12% after the delisting was announced.