The Overview tab is not showing up o my clients Projects centre... why?

Hi anitachisholm-ea,

Thanks for reaching out here.  QuickBooks Online Projects feature is a great way to record, organize and track all areas of your current and upcoming jobs.  It's important that you're able to see the project overview at a glance.  I'll be glad to assist!

Based on the information you've provided, I recommend clearing cache on your browser.  I'd also suggest logging into your QuickBooks account with a private or incognito browser.  Once you've logged back in, ensure that you've Selected the project.  Open the Transactions tab to see if there are items listed.  Once this has been confirmed, select the Overview tab.  

Should the issue persist, please don't hesitate to contact us so we can look further into this from our end.

Schedule a Callback or start a Chat: click (?) Help in the upper right in QuickBooks Online > enter "Contact support" > hit Contact Us > provide a brief summary of your situation > hit Let's Talk > choose Get a callback or Start a Chat.
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Please don't hesitate to reach back out if you have other questions.  We're always happy to help!