WaniKani App

I’ve recently downloaded the WK app on AppStore. But I can’t log into my account at all. When I press the ‘log in or sign up’ button, a picture of ‘Doge’ starts spinning and there’s a text which says ‘Shiba recognised you! Wait for him to do his magic…’ 

I have waited and waited, actually I’m still waiting. Nothing is happening, tried multiple times. The image just keeps spinning and I can’t do anything on the app since it won’t let me log in.