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Question

Lemon Squeezy OAuth connection returns 400 Bad Request

  • September 29, 2026
  • 1 reply
  • 5 views

I am trying to connect my Lemon Squeezy store  to Zapier.

The connection process works normally until the authorization step:

Zapier → Lemon Squeezy → Connect → Authorization Request → Authorize

After I click “Authorize”, Lemon Squeezy immediately returns:

“Oops! An Error Occurred. The server returned a 400 Bad Request.”

I have already tried:

  • Connecting from inside a Zap
  • Connecting directly from Zapier → Connections → Create connection
  • Chrome Incognito mode
  • Without browser translation

The same 400 Bad Request occurs every time.

Could you please check whether there is an OAuth authorization issue with my Lemon Squeezy account/store or the Zapier integration?

Thank you.

1 reply

Troy Tessalone
Zapier Orchestrator & Solution Partner
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  • Zapier Orchestrator & Solution Partner
  • September 29, 2026

Hi ​@Asa 

Help link for using Lemon Squeezy in Zaps: https://docs.lemonsqueezy.com/help/integrations/zapier

 

Help link for opening a ticket with Zapier Support: https://zapier.com/app/get-help