We searched for this church by name and location and found it well documented. Reference sources describe the Congregational Church of India (Maraland) as based at Saikao (Serkawr) in southern Mizoram, founded in 1907 by missionary Reginald Arthur Lorrain, with its headquarters office there (Wikipedia, Wikidata), and one entry gives the headquarters address as Saikao, Siaha District, Mizoram, PIN 796911. Recent independent activity is confirmed: a Congregational fellowship news page reported the inauguration of the Serkawr (Saikao) headquarters office on 24 July 2024, led by assembly officers of the church (internationalcongregationalfellowship.org), and a Mara regional news site covered a joint assembly of this church with the Evangelical Church of Maraland in Siaha in May 2024 (maraland.net). Our search for the specific Facebook page "ccimhqrs" returned no confirmation, as social pages are behind a login wall. The findings are summarized here for space; the full research was weighed in the review.
Our conclusion: Independent search confirms the Congregational Church of India (Maraland) as a well-documented denomination founded in 1907 by missionary Reginald Arthur Lorrain, with its headquarters at Saikao (Serkawr) in Siaha District, Mizoram, exactly as given in the signup. Recent activity is also verified, including the inauguration of the Serkawr headquarters office in July 2024 reported by the International Congregational Fellowship and a joint assembly
No further action is needed. This report is refreshed whenever the church is reviewed again.