Training Center has been temporarily banned from play due to a bug that causes a Basic Pokémon with damage counters to take 30 damage when it is evolved to a Stage 1 or Stage 2 Pokémon. We are actively working on a fix for this bug and will deploy it at the earliest possible opportunity.
Our apologies for the issue and thanks in advance for your understanding.
Pokémon TCG Online
The Pokémon Company International
Need help from the support team? Visit the [url="http://www.pokemon.com/support"]support portal[/url] and submit a ticket!