Well,being in the freezer the whole time,the hops might still be pretty good. Make sure the extracts are clean & free of any nasties. Pelicles & other visual cues. Even being in the fridge,the extracts might brew up a bit darker. I used a 2 year old cooper's OS lager can,& it turned out like a session version of Salvator from paulaner.
Everything works if ya let it-Roady(meatloaf)