Thats not the place where Wallace is located. There was a gym rework and there is only one gym leader left instead of 2 gym leaders now. You can find Wallace at the Gym 1F now.
Pokemon can learn moves from different sources such like level-up, move tutors, TMs, event-tutors, egg-moves, pre-evo moves.
Wish is an egg-move for Umbreon, so you need to teach it with the egg-move tutor in the daycares.
Hey, it will only try to evolve upon reaching the max amount of happiness. So you would need to faint it in a wild battle to lose some happiness and then get it to the max happiness during daytime (10:00 - 20:00 ingame time) again. Happiness evolutions dont need a level-up for the evolution, its only about reaching the max happiness.
Hey, it will only try to evolve upon reaching the max amount of happiness. So you would need to faint it in a wild battle to lose some happiness first and then get it to the max happiness during the correct ingame-time again. Happiness evolutions dont need a level-up for the evolution, its only about reaching the max happiness during the correct ingame-time, in your case 10-20 for daytime.
You are missing some hints as Damon told you, there are randomized parts on that quest so if you are following a guide for that it wont help much as you have to look out for some spots and NPCs on your own.
You probably followed a guide for that quest? Keep in mind the quest is randomized on some parts so following a guide wont always work, you may need to find more hints, so male sure to explore the area on your own too.
You cant get the sword, also it cant learn Play Rough because it learns it via TM in Gen8 and PRO is using Gen7 mechanics where no TM for Play Rough exists.