WoW, Failed to create pet battle

I’ve recently gotten back into World of Warcraft. I’ve been playing without a subscription so my account defaults to a ‘Starter Account‘; which has certain limitations. Unfortunately one of those was access to Pet Battles. What is peculiar about this is that you can purchase the training et al. from a Pet Battle vendor, but you cannot engage in Pet Battles.  This leaves you with the starter Pet Battle quest, but the inability to finish it. For the World’s most successful MMORPG, this seems like a glaring bug albeit a minor one, more of a nuisance for players getting into the game (or back into in my case).