The article quotes Igor Asanov as follows:

“We need to think more about ways to make distance education truly inclusive […] Obtaining this data is important to think about how to balance the quality of face-to-face with virtual teaching and thus be able to improve the quality of life of children and young people for the future ”. (Translation from the Spanish original)

https://www.scidev.net/america-latina/news/jovenes-invierten-menos-tiempo-en-educacion-por-pandemia/

Both reserachers from the University of Kassel were invited to be interviewed because of another study published together with McKenzie; Mensmann; & Schulte on the effects of the COVID-19 quarantine on Ecuadorian high-school students in World Development, Volume 138, February 2021, https://www.sciencedirect.com/science/article/pii/S0305750X20303521