On October 7, 2010 he was expelled from the national team on disciplinary grounds during World Championship held in Italy. He came back to national team at European Championship 2011. In 2014 played at World Championship 2014 held in Poland. France lost the match for the bronze medal with Germany and took 4th place. He was one of the key players in the 2015 World League championship campaign. On October 18, 2015 French national team, including N'Gapeth, achieved title of the European Champion 2015 (3–0 with Slovenia in the finale). Ngapeth for the second time in a year 2017, selected Most Valuable Player of FIVB World League and winner gold medalist with France.