Hello. I typed 'He is tall' for the French to English translation, and got marked as incorrect because I didn't type 'He's tall!' That is silly. Can that be fixed please?
If you feel that your reply should have been accepted, you should report the sentence right away. There is a "Report" button in the pink field that tells you that your reply was not correct. This button includes the option "my reply should have been accepted" (or similar).
I've done that occasionally, and after a few weeks I got a message: "Your sentence has been accepted".
(However, if the topic of the skill is "contractions", then the contracted version will probably be the only accepted one because this is precisely the point that you are supposed to learn.)