I'm having issues with vendors not being able to pay through QuickBooks.

Let's ensure that we're on the same page in addressing your concern about paying through QuickBooks Online (QBO), @visualimpacttint. 

Before we begin, I'd like to know if you're referring to receiving payments from vendors. If so, are they recorded as customers in your company file? Have you also encountered a specific error message or code during the process? This information would help me determine and provide you with the correct resolution. 

Also, when paying customers through the application, this would require you to have a QuickBooks Payments subscription. If you already have one, let's ensure to turn on the online invoice payments setting to start accepting payments online. We can configure this on your company file by going to this article: Receive and process payments in QuickBooks Online with QuickBooks Payments.

On the other hand, if you're referring to paying your vendors through QuickBooks and are subscribed to QuickBooks Bill Pay, an option to pay them should be available. 

However, if the issues you're having refer to an error when performing either of the scenarios above, I suggest performing browser troubleshooting steps. This could be caused by too many outdated internet files stored on your browser.

Let's begin by accessing your company file using a private window. A private window is a helpful tool for troubleshooting browser-related difficulties, as it won't preserve any history. The following are the keyboard shortcuts:

• Google Chrome: press Ctrl + Shift + N
• Mozilla Firefox: press Ctrl + Shift + P
• Safari: press Command + Shift + N

Once done, we can clear your browser's cache or cookies to avoid similar issues in the future. Alternatively, opting for one of the supported browsers can be an alternative.

Moreover, you can consider checking out these articles to learn more about Online Bill pay that covers features and benefits: 

• Online Bill Pay - Automate Your Bills Today
• QuickBooks Bill Pay explained: How it works, benefits, and setup

Feel free to add a comment if you have follow-up questions regarding vendors in QuickBooks Online. Stay safe!

@visualimpacttint 

Try opening your QBO account on any private/incognito browser. Did you encounter the same problem?