I've got a few troubleshooting steps we can try to get the Customers page working, rachelugg.
Let's start logging into QuickBooks Online (QBO) using a private or Incognito window. This helps us verify if this is a browser issue or not.
If you need to access the customer's transactions, you can run a report as a workaround.
We have a link where you can find articles about managing reports in QBO: https://community.intuit.com/browse/quickbooks-online-intl-reports.
Keep us posted if you need anything else in QBO. Just drop a comment below and I'll be sure to answer them.
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