I've also now run into a point I'm stuck and wandered around the entire game making no progress...
After cinnibar I went to pallet town and started the evil oak stuff, told to go to saffron had the convo with blue etc. Then I left and got a call from Green about meeting her on route 7 and proceeded to be stopped-
1) I've found a couple of the route change buildings I believe lead into saffron but I can't get through any of them, the guards don't let me through.
2) Route 7... doesn't seem to exist? Route 5 connects directly to Route 8 and I went around the entire map not finding a 7, so I can't meet green. Someone 60 pages ago said something about it not showing up till after the Evil Oak arc which I think I'm still in the middle of but can't make progress...? This entire thing has just left me confused and stuck.