The launch of Warcraft III: Reforged hasn't been a smooth one, with myriad issues ranging from animations, assets, lighting, bugs, multiplayer features, and more. According to a Reddit thread, users are able to apply for an immediate refund on the title, with some refunds being processed almost instantly. We've reached out to Blizzard regarding refund availability and will update this post should we get a response.
Blizzard has also responded to the launch in general with a post in the official forums, which you can check out here.
If you're unhappy with any issues with the game, you can try using this link to get a refund. Our review for the title should be hitting within the next few days.