It's my priority to assist you in troubleshooting and determining what's preventing you from creating your paid check, wellnessrph.
Before we proceed, I'd like to know if there's an exact error message you're getting in. Giving screenshots is very well-appreciated. This way I can give you an accurate solution.
Since you're unable to create a check on your end, we can open your account in an incognito mode to see if this has something to do with your browser. Whenever you visit a website, it saves some information from the web page in its cache and cookies. These files allow the websites you visit most often to load faster.
Here's how to access incognito mode in some of the most commonly used web browsers:
Google Chrome: Ctrl + Shift + N
Mozilla Firefox: Ctrl + Shift + P
Microsoft Edge: Ctrl + Shift + P
Safari: Command + Option + P
If you're able to create a paid check by browsing privately, it's safe to say that it's being caused by the browser. It can be fixed by clearing your cache and cookies.
In the event it continues occurring while using incognito, you'll initially have to try switching to another browsing application.
Here's a list of supported browsers:
Google Chrome
Mozilla Firefox
Safari 11 or newer
In addition, I'm adding these articles to learn how to manage printing checks in QuickBooks: