For god's sake man/ woman. THIS IS YOUR LIFE! If you would have applied in January, you would be walking around with a green card right now and home free. If this was a straight forward case, you could do it yourself but don't fuck it up and be one of those people in the paper who get arrested with DACA because they messed some little thing up. GET A LAWYER ASAP.
What's wrong with you?! Get a lawyer, let him dig around and see how he can prove you entered legally and get out of this nightmare.
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Late 40's Dreamer (Holy Fucking shit I'm almost 50 and still dealing with this), aged out of original DACA and didn't have a chance to apply for extended DACA after Republicans killed it on the vine.