"I have been in continuous employment since 2014 and the letter says that the letter of employment from my employer did not include my duties and responsibilities and therefore they are rejecting my application."
From the Reddit post, the reason for refusal seems completely fair to me.
He failed to show them his duties and responsibilities. How can they assess his application without those ? Feel sorry for him, but he should have read the requirements before submitting the application.
I don't see any reason why you should be concerned if you have followed the requirements. It seems that you are one of those small percentage of applicants that their files seem to take longer, don't worry, what its meant to be yours, will be. Cliche, but true.