Hello there, @lsrjm1995.
May I know if you received an error when attempting to save the bill? There are times that the systems needs you to fill in a specific field in order to close the screen (like sales tax or classes).
If none, this may be because of the piled up data on your browser. With that said, I recommend logging in to an incognito browser to have a clean slate. This does not store data and will help you browse websites smoothly.
If the same thing happens, I suggest using a supported browser.
Feel free to add a reply below if you have other concerns when creating bills. Stay safe.
