Hi andy125.

Allow me to add to what my colleague was mentioning about special characters and how they can cause issues with QuickBooks Online.

While some special characters such as brackets are not allowed there is a list of them that do. I recommend going through this list to make sure the characters you're using are able to work with QuickBooks Online. Be sure to also check inactive items, employees or customers as well.

If that doesn't work I recommend trying to clear your cache and cookies and opening QuickBooks in a private browser such as Google Chromes Incognito mode.

Should you continue to have issues with this I suggest getting in touch with our support team so they can take a closer look at what's happening. You can reach them using one of the following methods:

Schedule a Callback or start a Chat: click (?)Help in the upper right in QuickBooks Online > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.
Social Media: Facebook, Twitter, and Instagram.
Support hours are from Monday to Friday between 9 a.m. and 8 p.m. ET.

Have a great day!