Good but a BIG issue

So when I first downloaded Pokemon Go, everything was great. I had a snorlax at a low lvl and even 5 evees! But one day, I logged out and when I tried to get back on, it denied my access. So right now Im terribly mad. I had to restart all over again. I hope Pokémon Go fixes this. Besides this is a really great game!

FlameAngel? about Pokémon GO, v1.31.0