It's never done this before until I updated Pokemon Go. I can't see any pokemon on the map, (I can see the little rings where the Pokemon appears but can't actually see the Pokemon which prevents me from taping on it and catching it) and i can't see my buddy pokemon(Ivysaur), i can see him in the little circle beside my avater when im walking, but when I tap on my avater I can't see ivysaur, when i try taping on the invisible ivysaur It does nothing, so I can't so how far I've walked for him. And I have a problem with gyms, when I try to battle, my pokemon and the pokemon that I'm fighting won't show up on the screen. I've tried force stopping the app and even tried restarting my phone, but the pokemon still don't show up.
How can I fix these problems?