I am having similar trouble. My wife and I have tried several times this past month, Sundays and weekdays. I just uninstalled the app (iOS and App versions are both latest versions). Still won’t sync. The error continues to be the “down for maintenance” message. I haven’t been able to update since March 24. Please fix this.
I’m having syncing problems too on my iphone. At first I simply could not log in — I’d hit the Sign In button and nothing would happen, even with the correct credentials. I uninstalled and then downloaded the app again and now I can log in, but it automatically starts syncing as soon as I am logged in. Then after just a few seconds of syncing it boots me back to the log in screen without warning. I can’t get it to do anything else.
I haven’t been able to use the LDS Tools app for a very long time now and it’s making it difficult for me to do my work. I really hope this is resolved soon.