Short answers, pulled from the story.
The Communist Party of Ukraine (renewed), or KPU(o), was a Ukrainian political party formed in November 2000 following a split from the main Communist Party of Ukraine (KPU). It was led by Mykhaylo Savenko, a former Member of Parliament who had supported President Leonid Kuchma through the Labour Ukraine bloc.
The original Communist Party of Ukraine claimed the KPU(o) was instigated by the political establishment to take votes away from the KPU. This suspicion was reinforced by the fact that the party's founding leader, Mykhaylo Savenko, had previously been aligned with the pro-presidential Labour Ukraine bloc.
In the 2002 Ukrainian parliamentary election the KPU(o) won 1.4% of the popular vote and no seats, despite outspending nearly every other party in the race. By the 2007 election its share had fallen to 0.29%, and it did not participate in the 2012 or 2014 elections.
Ukraine's decommunization laws came into effect in May 2015, banning communist symbols and prohibiting songs like "The Internationale". On the 24th of July 2015 the Ukrainian Interior Ministry stripped the party of its right to participate in elections, and on the 30th of September 2015 the District Administrative Court in Kyiv formally terminated it.
No. After the Ukrainian Interior Ministry stripped the party of its electoral rights on the 24th of July 2015, the KPU(o) did not challenge the ban. The party's failure to appeal led directly to its formal termination by the District Administrative Court in Kyiv on the 30th of September 2015.
Mykhaylo Savenko was the first and primary leader of the Communist Party of Ukraine (renewed). Before founding the party in November 2000, Savenko had been a Member of Parliament supporting President Leonid Kuchma through the Labour Ukraine parliamentary group.