If they're breaking out of the ball and running, they're just having a bad run with the RNG. At higher CPs, the Pokémon are much more likely to run, and certain Pokémon seem to be more prone to running than others.Possibly a soft ban? Try a PokeStop or try to battle a gym. If you can't then yeah. Or servers are just really crappy.
Lures and incense don't attract Pokémon that have already spawned towards you or the Pokéstop. It only increases the spawn rate of new Pokémon around you or the Pokéstop.Sat at home, radar shows 2 onyx, 1 of the evolved flower Pokémon (no idea what it's called), a few eevee's and an abra - so I pop an intense.
4 pigdey's and 2 weedle's show up.
Dam this game.
If you see Pokémon on the Nearby, then it's already spawned and you have to physically move to their location to encounter them. What level are you, BTW?