How do you put a vowel under a letter on the Hebrew keyboard. If I just type את רואה, Duolingo says "almost right" because I didn't place a vowel under the aleph to denote the masculine or feminine form of the verb.
I think it would be best to ignore this "almost right", writing with niqqud in the computer is very hard and nobody is actually doing that anymore. I also believe it would be fixed soon.
I would like to share this link, related to the keyboard in Hebrew. http://www.lexilogos.com/keyboard/hebrew.htm