Sign up problem

This app, is perfect in all conditions, but since last update, every time I try to sign in, this program crashes.. plz fix it, its unable to play without your programme..

P.S.
Below I typed what kind of error app show me every time when I tried to sign in when playing Destiny Rise of Iron

The server is temporarily unable to service your request. Please try again later.
Reference #15.c481655f.1478088877.a6aa9

Jazzeeliousont about Destiny 2 Companion, v4.2.1