I am not sure that this account is hacked or sold because that account woke up on 13 APR 2018 and changed password on 18 APR 2018 the password not changed immediately so I don't think it is hacked.
But there is some difference in the posting behavour from AUG 2018 to SEP 2018 completely turns into local board poster but before that he is posting in english most of the time.