Sorry for the late reply! So if every trainer is matching your level in the game that's because of a Mod. You can turn it off by going inside of your house and talking to the mewtwo status I believe! Something turns it on by accident.
As her the Dawn battle, yeah Delcatty has an ability called Neko Neko rush that makes her hard to hit. This ability will not be in the new version of that game and the difficulty of the game itself will be lowered a bit to make things a bit fairer!
Thank you for replying and apologies if I seem like I am complaining. I did go through and turn the Challenge mode off again and it remained off. Now it is pretty much just waiting for the next version to come out. Keep up the good work :) the game is fun and I know others are looking forward to the next update as well!