All Boost transactions are final. This transfer is between you and the newsroom, so Civil does not have any control to stop or refund any transactions.
Once the ETH leaves your wallet, the newsroom will receive the funds. All debit and credit card transactions are controlled by the newsroom and the payment provider Stripe so Civil does not have any control to stop or refund any transactions. You can get in touch with the newsroom about the payment if using Credit Cards or fiat currencies.