iOS crashes on login

I just discovered Wanikani. I went to see what the app was like on my phone (iphone 5c - latest ios). The app crashed when I logged in. I reopened it, then the dog thing said it remembered me and crashed again.

Find the thread for the app you downloaded in this category of the forum.

Apps are made by third parties and there’s more than one.

Have you generated an api key for yourself?