Hi Peter,
You should be all good there with just the Platesolve 2. The fact that it says it is solving means it has the catalogue there to use so it looks like it is installed. I have the all sky solver installed, but that is for sessioncraft meridian flippage and general blindsolving, and shouldn't be making a difference in your case.
I have 2 suggestions:
1) Make sure you focal length is correct in the Tool tab.
2) solve near the pole first, then slew a few degrees, solve again, sync (it should sync automatically, but i do it manually everytime to make sure), then go plug in Orion in the "Objects" list, then solve again, then sync, then GOTO orion again. You should be dead centre for anywhere in the sky then.
I find a small change between the first two solves helps refine its map/star alignment pretty quickly, and it is then able to do long slews and hit targets very well. The above has literally never failed to work for me at 1000mm focal length and shorter.
I hope that is helpful and wish you the best of luck
