I’m posting my experience here, just in case it could help.
Yesterday (September 19th, 2018), I was unable to get connected to the game’s servers. The game stopped loading at step 1/23, with the error 10044. I’ve tried many things: check my Wi-Fi, my data, clear cache, clear data, reinstall the whole app… Of all the usual support recommandations, nothing worked.
But I happened to have an app installed on my phone to block ads (Block This!). JWA started working again when I deactivated that app. In other terms, it seems that this kind of app can interfere with JWA and prevent it from getting connected to the game’s server.
I hope that helps!