I constantly get दो entered with a द ा े keystroke marked as wrong. Is my input method incorrect?
You should write द+ो. Putting द+ा+े will produce an output that looks the same but is interpreted differently by the system. ो gives the o vowel, while ा+े would be the aa vowel followed by the e vowel. Both look the same so to avoid confusion one would write ाए in the latter case.