My Aranet4 app got crashed repeatedly and didn't open.
I found out the storage was above 12GB! which is huge.
I cleared it and re-pair the device - the app is open again but still more than 12GB in storage.
You can see a screenshot here - https://photos.app.goo.gl/EJrbDAUtcKnHVfB79
Please let me know if this is normal or how to fix it.