How do you report error and mistakes on the lessons?

I just installed this app to try and suggest to my friends who are learning Arabic
but I found small mistake for example here in This lesson it is written سِفينة instead of سَفينة
and رِصاص instead of رَصَاص
I am not sure if the lessons are double checked or not, but this is the first lesson I opened and saw those mistakes, and I don’t see any option to report the mistake to be corrected.