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Stuck red error box ' already submitted form'

  • April 5, 2026
  • 1 reply
  • 4 views

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I upgraded by shopify theme this week and the only bug seems to be a red box showing up (partially) that you can’t fully read but it’s related to the footer position wise, that is firing on all pages and saying ‘you have already submitted this form using this email’. I’ve tried on private browsers, other peoples phones you name it, but I can’t suss it out. This wording doesn’t appear anywhere in my shopify code so I can only assume it’s being triggered by Klaviyo. can anyone help me work out how to block it please? 

 

 

1 reply

ArpitBanjara
Principal User II
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  • Principal User II
  • April 6, 2026

Hey ​@jensonline 

The red box is your Klaviyo footer embed form firing on every page load and immediately telling visitors they've already submitted, because most of them probably have. The theme upgrade is what broke it.

The most likely cause: your new theme has the Klaviyo app embed turned on, but your old footer code (the <div class="klaviyo-form-XXXXXX"> snippet) is still sitting somewhere in a carried-over section. So the form is loading twice, or loading in a weird state that causes it to auto-fire and return that error before anyone even touches it. Start by going into your Shopify theme code editor and searching all files for klaviyo-form. Your form ID is the string of characters that follows that prefix. you can also find it inside Klaviyo in your form's targeting settings. If that ID shows up in more than one place in your theme files, that is your problem right there. Delete the duplicate.

Also worth checking: view your live page source and search for ‘company_id’. If it appears twice, you have a duplicate Klaviyo script on top of everything else, which will need Klaviyo support to clean up on their end.

Once the duplicate is gone, republish the form in Klaviyo and test on a fresh private window. The error should stop appearing. 

I hope this helps and thank you for sharing your question here in the community. If you are still stuck, feel free to schedule a call with us here - https://flowium.com/lp/klaviyo-agency/

Cheers.

Arpit