Stops working after a couple of sentences why? – Dictation - Speech to text Review

I couldn’t figure out where the support is.. unfortunately I have to give a rating sorry and hope someone will answer/help.. The dictation red lamp is blinking, but after a couple of sentences there are no more writing on the screen, is this app only for Twitter length? When I click on “dictate button” again, I get commercial for to install grammar keyboard. Is this necessary and do I have to watch advertise for products every time I do one recording? Is the grammar keyboard for to speak in punctuations etc? Help!
Review by PiaMad on Dictation - Speech to text.