Bug with lightspeed integration

  • 28 July 2021
  • 3 replies

Badge +2
  • Contributor I
  • 0 replies

Hey guys,


When I setup the lightspeed integration for a client we keep getting an error that de login is not correct so we can’t integrate Klaviyo. But the login is 100% correct.

Is there a solution to this bug?


Would be appreciated!


Kind regards,




Best answer by David To 28 July 2021, 19:20

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3 replies

Badge +1

Hello Klaviyo team,

Same problem here, and the steps presented don’t fix the issue. Can you please have another look at your - seemingly broken - integration, please?

Userlevel 7
Badge +58

Hi @Larry,

Apologies for the inconvenience you are experiencing when attempting to Integrate with Lightspeed. In an attempt to resolve this can you please do the following: 

  1. Navigate to the Lightspeed Retail POS (R-Series) Login page: 
  2. Login to Lightspeed
  3. Navigate to Klaviyo Login page: 
  4. Login to Klaviyo
  5. Follow the steps to Integrate with Lightspeed

Please note that this integration only supports Lightspeed Retail POS (R-Series) so please make sure you are logging in with the appropriate username/password combination. 

If you are still having trouble after following the steps above, please contact Support and provide them with a screenshot showing that you have successfully logged in to Lightspeed, and they will proceed to investigate further on their backend. Thanks for your cooperation.

Have a good day!

Userlevel 7
Badge +60

Hello @Dean,

Thanks for sharing your question with the Klaviyo Community!

Since it sounds like your LightSpeed integration with Klaviyo is coming up with an authentication error; specifically calling out your login credentials, I would first suggest taking the following steps:


  1. Completely remove (not Disable) the LightSpeed integration in Klaviyo
  2. Log out of your Klaviyo account
  3. Fully clear the cache and cookies on the browser and close out of all browsers
  4. Log back into your Klaviyo account via an incognito window
  5. Re-add the LightSpeed integration from the All Integrations tab:

If you are still faced with the same issue, I would further suggest reviewing your LightSpeed permissions credentials to ensure you have the correct permission levels make this connect with Klaviyo. if it appears you do have the correct permissions to create the connection, then I would recommend updating your username and password before attempting the steps provided above. For your convenience, I’ve included the How to Integrate with Lightspeed Help Center article here should you need the steps on how to create this connection between LightSpeed and Klaviyo.

Thanks for being a part of the Klaviyo Communtiy!