Pokémon GO developer Niantic has confirmed that there are currently Pokémon Trainer Club log-in issues affecting a number of players. However, you can rest assured that they are working on dispatching a fix as soon as possible – so it shouldn’t be too long before things are back to normal. There’s currently no word on when exactly the fix will be available, but stay tuned for any updates.
Source: Twitter
Pokémon Blog 
One thought on “Pokémon Trainer Club log-in issues affecting Pokémon GO players”