Thanks for bringing this issue to our attention. I'm here to make sure you're able to pay bills in QuickBooks Online (QBO).
I tested to see if I can pay bills properly in QBO to check if we have a current issue with it. I was able to successfully to do so. To single out this issue, let's try some basic troubleshooting steps to isolate why you are not able to.
To determine if the cause of this issue is the browser's cache, please try using a private browser or an incognito window.
For Internet Explorer of Firefox, press Ctrl + Shift + P.