Having issues with opening unpaid supplier invoices ,once clicked on supplier ,its showing only blank screen instead of all related transactions

Joining you here to offer my help in sorting this out so that you can access and view supplier-related transactions once again, info. 

Aside from the blank screen, are you also getting an error message when opening a supplier's profile? 

There are times that excessive cache and other browser-related issues can lead to QBO's improper functionality or display of incorrect information. To check if that's the case, I'll give you the steps that can effectively resolve these issues.

To begin, you have the option to try different browsers such as Google Chrome, Mozilla Firefox, Microsoft Edge, or Safari. QBO performs optimally with these browsers and can assist us in identifying the issue. 

You can also use these keyboard shortcuts to switch to an incognito browsing session which can also help us resolve browser issues:

• Ctrl + Shift + N for Google Chrome
• Ctrl + Shift + P for Firefox
• Control + Option +P if you're using Safari
• Ctrl + Shift + P for Microsoft Edge

After that, go back to your account and check if you can already open a supplier's profile. If everything is working fine,  follow the steps in this article on how to clear cached or delete internet files; Clear Cache and Cookies to Fix Issues When Using QuickBooks Online.

Allow me to share these articles with you, which provides additional guidance in getting supplier-related transaction data:

• View Supplier Transactions 
• Run a Report with Supplier Totals 

Feel free to return to the Community if you have any other questions about the program. We are available at all times to provide answers and assist you.