Check if the following steps helps you in viewing all the unpaid & overdue invoices.

We display only the first 50 entries in the list-view page. You need to scroll-down to the bottom and tap the 'load more' button to load the next set of 50 transactions. Steps as follows:

• Login to your Zoho Invoice account using the iPhone/Android app.
• Select the organization and tap the "Invoices" module from the menu.
• Tap the "All" sub-tab. (Not the "Unpaid" or "Overdue")
• Scroll down to the bottom of the page within the app.
• You could see the 'load more' option > tap the key to load the next set of invoices.
• Now, you can tap the "Unpaid" or 'Overdue' sub-tabs to check all the invoices.