Here are the Kantar National TV ratings of Miss Earth from 2012 (moved to daytime) to 2018 (moved back to late primetime):
2012: 14.6% (1st delayed telecast on daytime)
2013: 12.6%
2014: 12.8%
2015: 13.2%
2016: 14.2%
2017: 14.1%
2018: 5.7% (1st delayed telecast on GMA and reverted back to late primetime)
Despite the good reviews from the netizens, it seemed that repeat telecast on Fox Life and live/web streaming from different web channels prevented Miss Earth from getting good TV ratings when it moved to GMA this year (actually should had been benefited by strong lead in of Kapuso Mo Jessica Soho), but there is still room for improvements on how to improve the viewship in the near future if they will continue with GMA in the coming editions.