Why do you keep screwing up the app $1600 a year sucks for something that keeps getting messed up sucks
I may haven't personally experienced what you've gone through, but please know I'm here listening to you, ewlage.
For me to determine what exactly is going on with your app, please update this post by editing or commenting below.
If you're unable to open the QuickBooks Online app on your phone, you can uninstall and re-install it. You can open this link to begin the process: https://quickbooks.intuit.com/apps/. Scroll down to the Get the QuickBooks Mac or Windows App section, and then click the Free Download button.