Tłumaczenie - Angielski-Łacina - My Constant.

"You can move on now"

Actually, the person for whom this poem is intended is to leave far away (its author has given us some clarification after we had asked him for [this is the first version of the poem])...

Your translation is "robustissima et concisissima" but are you sure that "gratias agere alicui" can be constructed with accusativi cum infinitivo?

I'm not sure so I've changed it. Thanks for your remarks.