"Asi nerozumí mé otázce."

Translation: They probably do not understand my question.

[HervigBerg]

I would transalte : He probable does not understand. What is the difference between "he" and "they"...?

[VladaFu]

You mean in the Czech sentence? No difference. If you want to be 100% clear that it is plural you can use rozumějí but rozumí is correct as well (the sázet paradigm of the 3rd class verbs).

[Clive_Alive]

The word bank offered me "They probably don't understand my question," which I chose and was accepted, but with a typo. Reported.

[nueby]

The action this suggests is that we manually add these contractions everywhere because Duolingo's handling of them is buggy. I do not see that happening unless Duolingo gets out of handling contractions entirely.