Someone is copying the lichess app and put it on google store

Hi,
I just found this lichess chess clock copy on the internet. Lichess is open source but are they allowed to sell the app`?

play.google.com/store/apps/details?id=com.buddhichalsportsclubnepal.chess.clock&hl=en&fbclid=IwAR1psuIpl4ksKZeEJR_HvxWDUhR7Cs8vCv5yYaD_2dL_Sueefk0EeZqr2dY

‎Sushil Chaudhary is advertising it on chess pages in Facebook.

pretty sure that is ILLEGAL guys!!!!!!!!!!!!!!!!!! :(