Two Romanian words are offered as the translation for prayer: rugaciune and ruga (I can’t include markings over the a in this forum). If you can’t remember the sequence the program has established for itself, then I am often marked wrong. Also, when typing the translation for benevolence, bunavointa (again, the marking over the a is missing, along with the marking under the t is absent here), it marks my answer as incorrect, and persists in showing that I have selected a “double t (with scintilla)” when I have not.
What course are you talking about?
Course>languages>other European>Romanian, under segment Romanian missionary.
Should’ve posted a link… 
This is the course: (most likely)
https://www.memrise.com/course/568024/romanian-missionary-vocabulary/
Getting in touch with the course creator might be out of the question…