Long story short, there’s no timeline about when this I’ll be able to get this fixed. Which, I know is a bummer. It’s due to limited resources on my end. If you or anyone you know has experience with React-Native and React (which is what the app is built on), ask them to contact me.
This leaves the question, what should you use in the meantime? I recommend another wait time app by TDR Dash on iOS and Android. It’s available in English which is the most important part. Alternatively, the official mobile website for Tokyo Disney Resort has wait times, but only in Japanese.
I apologise for any inconvenience this has caused anyone.