@Jay ***
Yeah I am not necessarily replace your phone - but if you try on another device (tablet) or other phone, you can rule-out your phone as being the problem. I am not familiar with your situation but I use the app on my phone without problem, I suspect 1000's if not millions of people use it so the app work, mostly.
You can go back an try your phone a dozen times but if nothing changes you really should expect different results.
I am just trying to be helpful