Sometimes the app crashes when you launch it (it does not matter if it's the first time you use or if you were logged before). it displays this Android alert then crash:

Application Error
The connection to the server was unsuccessful. (file:///android_asset/www/index.html)
OK

When I try to relaunch the app, after 4 to 8 times I always succeed to open it without the app crashing.

Did you ever had this issue Juan? it's not the first time it happens to me. It's quite irregular it's most likely due to an external resource being retrieve and it fails. I don't remember seeing it on iOS, only on Android devices.