With this most recent update on the app I can finally create invoices with the correct tax amount however when saving it gets stuck in the "saving" loading screen. I have to then back out and choose leave without saving. It does save anyway so while it's an extra annoying step at least it ends with a correct invoice. The same thing happens when deleting it gets stucks on the loading "deleting" screen and I have to hit back to get out of it. When I refresh the client's page the invoice is indeed deleted though.