Hello James,
Welcome to the Forum. Sharapova gave you a great answer.
If you have started the generator or the reactor and after that, you see that it did not complete, closed or no results(did not reach to 100% of the progress) it means that the computer most probably restarted. In this case, the work if EA Studio will not be saved.
If it reached 100% then all the work is in the collection. There you will see the strategies. The best thing is to download them.
Regarding the trades in MT, really hard to say what happened. If you see the smiley face on your chart with the EA, it means that the EA works.
Let us know how it goes!
Cheers,