It's very likely that you have been banned for plagiarism. Found a quote of yours that had been used multiple times by other users without stating the source.
Cannot say with 100% certainty that this is why you are banned, but all accounts who used it are now banned, they have also posted in the same thread.
archivedThe Blockchain.io platform will combine a centralized custodial exchange with a decentralized "trustless" cross-chain "fair exchange" settlement. The centralized exchange will be low-latency and full-featured, with custody services, centralized order booking and efficient order matching.
And like they say: The Blockchain.io platform will combine a centralized custodial exchange with a decentralized trustless cross-chain fair exchange settlement. The centralized exchange will be low-latency and full-featured, with custody services, centralized order booking and efficient order matching.
"The Blockchain.io platform will combine a centralized custodial exchange with a decentralized trustless cross-chain fair exchange settlement"
Blockchain.io will combine the efficiency of a low-latency full-featured centralized exchange with decentralized trustless cross-chain settlement.
...and many others.
I understood what my mistake was, but I would like to know what I need to do now so that my account is unblocked?