Nixplay 10.1 inch Smart Digital Photo Frame with WiFi (W10J) - Black - Share Photos and Videos Instantly

How do i activate the trial for Nixplay Plus?

What is the nixplay trial? Does it mean when the free trial is over I have to pay a monthly fee to keep sending pics?

I ordered 2 10in. nixplay digital picture frame why did i received an 8 in. frame?

Does anyone know the difference between this one and the W10F?