Hi LuckyPhil,
Appreciate you doing the troubleshooting steps provided. For us to better assist you, I'd recommend contacting our Customer Care Team. That way, one of our customer support can further check and escalate the unexpected behavior encountered when using the app.
You can use this link to contact our Customer Care Team https://quickbooks.intuit.com/learn-support/en-au/contact and select a product and enter a few details about your query. Choose from Message us or Call Us.
In the meantime, you can access your QuickBooks Online account using a web browser on your phone or computer.
Post again in the Community if you have more questions!
