Due to BCH halving, the S15-BCH is not profitable anymore. To save these S15 miners, we have converted all S15-BCH hashrates to S15-BTC hashrates on 9 April 2020, 3pm (UTC+8). Affected users are advised to check their accounts and transactions. Shop and market of S15-BCH are closed as well.
Bitcoin Cash Halving is the event where the number of generated Bitcoin Cash rewards per block will be halved (divided by 2). According to the BTC.com, an aggregator that keeps track of the halving of BCH signaled the successful completion of the block reward halving once block 630,000 was mined. The total mining revenue per block mined dropped from 12.5 BCH to 6.25 BCH.
Your kind understanding is appreciated!