1. half of these problems are from having an old save or having used cheat engineFinding a lot of areas and paths inaccessible:
-Hoot Hoots says it's not the right time of day, no matter what time of day it is
-South of Lentell is inaccessible (preventing the start of shinx events and preventing getting dowsing machine for doing Leaf event with BHS) "Ok I understand but we should probably look for the girl"
-Can't find Buneary or "human" for hide and seek, not standing outside cave (might be on beach, which is inaccessible)
-Charmeleon nowhere to be found after walking out of restaurant/bar in a huff
-Delia makes the vigilante outfit but doesn't actually hand it over, only repeats the same scene over and over
Also the "Intro" quest is marked as Not Completed "Maybe Crabshaw has something to do" even very far into the game, Crabshaw has no new dialogue.
2. read 1
3. probably on beach
4. down east path where the vig/deputy path goes
5. it's just visual, you do get the outfit fixed for next update