It looks like account ancientcoins changed owner. After July 20. 2016 account start posting in Russian local board. I couldn't find posts written in russian before that date.
The same story about account mastica that was bought on this spring by Elgar Mamedov (ATMcoins).For two years mastica only had comments in English until February 01, 2018. After a two-month break, in April, he began commenting only in Russian.
And mastica immediately began to quote the bot ATMcoin.
The current owner of the mastica account states that he doesn't know English, which is very strange for a person who has over 30 pages of comments in English in his profile.
пoдoждeм...yвидим чтo oни пpeдпpимyт дaльшe. У мeня c aнглийcким coвceм нe oчeнь, я зaдaвaл вoпpocы в тeлeгy и пpo иco и пpo лиcтинг, нo из oтвeтoв (дaжe чepeз тpaнcлeйт) тaк ни чeгo и нe пoнял, чтo бyдeт? и кoгдa бyдeт?
Translationmastica: "I have huge problems with the English language".
Archive copy: https://archive.li/OG93A#selection-9765.0-9765.7