I can't access the 'Customise Form Styles' options in order to edit my invoice template. I get an error page 'We're sorry, we can't find the page you requested.'. Why?

I see that you encountered an error when trying to access the Custom Form Styles in QuickBooks Online. Let me share some guidelines with you to help rectify this error.

You can perform basic troubleshooting steps to see if it's a browser issue. Sometimes, your browser's cache and cookies become corrupted, causing problems when accessing websites or opening files. To begin, open your QBO account in an incognito window. It will prevent the browser history from being saved. Please refer to the following keyboard shortcuts based on your browser type:

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

If the private browsing session works, clear the browser's cache so the system can restart. This task is also possible in other supported, up-to-date browsers. Clearing the cache will reboot the system, allowing you to work with clearing the stocked cache and cookies causing the issues.

Check this link for a guide in running, customizing, and saving reports: Run reports in QuickBooks Online.

I'd appreciate hearing any updates after you've completed the steps, as I want to make sure this resolves your concern. Please don't hesitate to contact us again. Have a fantastic day!