Does anyone have any experience connecting to Lightspeed?

Try opening your QBO account on any private/incognito browser.

Hi erikatpilkington,

Welcome to Community!  It's important that you're able to connect Lightspeed to QuickBooks Online without complication.  I recommend contacting us outside of Community so our Customer Care team can work with you in real time, and ensure you're back to business as soon as possible!

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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Support hours are from Monday to Friday between 9 a.m. and 8 p.m. ET.

If you have any other questions, please feel free to reach back out.  We'd be happy to help!