Contributor I

Solved

Pop up form Issue - customer can go to next step when submitting form stuck on loading

Forum|Forum|1 year ago
July 17, 2025
5 replies
398 views

i phase this issue, when i try to submit the form (klick the subscribe button) there’s a loading and stuck there.
can anyone help me with this?

Sign-up forms

Best answer by zacfromson

Hi @Wohpe - this is a frustrating issue but usually a sign of one of the following:

Klaviyo Site Code Missing or Misconfigured

Double check that the klaviyo.js snippet is installed once on your site. If it’s missing, duplicated, or placed incorrectly (e.g., inside an iframe or conflicting script), form submissions can get stuck on “loading.”
Form Fields Not Mapped Correctly

It looks like you’ve added a custom field like birthdate, make sure they’re properly mapped to a Klaviyo profile property. An invalid field or date format can silently block the form submission.
List Issue

Go to Klaviyo > Signup Forms > Select your form > Check the “Submit actions” section and ensure a valid list is selected. If no list or a deleted list is tied to the form, it won’t complete submission.
App Conflict or JS Error

Sometimes Shopify apps or theme code conflict with Klaviyo forms. Try submitting the form in an incognito window with all browser extensions off. If it works there, there’s likely a script conflict. You can also check the browser console (right click > Inspect > Console tab) for red error messages.
Re-Publish Form

Even small edits can sometimes cause glitches. Try unpublishing the form, refreshing your Klaviyo dashboard, and publishing it again.

If none of that works, feel free to share the page URL here and I can help inspect it!

whereisjad

Expert Problem Solver IV

@Wohpe I would be happy to investigate this further if I am able to replicate the issue in my browser. Could you please provide instructions on how to navigate your Shopify store to access the pop-up, assuming it is currently live?

— Jad A | Klaviyo + Shopify + API Integrations Specialist • 7+ Years' Experience Helping with new setups, seamless integrations, and API connections—happy to connect. http://ja-technical-consulting.xyz/

zacfromsonAnswer

2025 Champion

Hi @Wohpe - this is a frustrating issue but usually a sign of one of the following:

Klaviyo Site Code Missing or Misconfigured

Double check that the klaviyo.js snippet is installed once on your site. If it’s missing, duplicated, or placed incorrectly (e.g., inside an iframe or conflicting script), form submissions can get stuck on “loading.”
Form Fields Not Mapped Correctly

It looks like you’ve added a custom field like birthdate, make sure they’re properly mapped to a Klaviyo profile property. An invalid field or date format can silently block the form submission.
List Issue

Go to Klaviyo > Signup Forms > Select your form > Check the “Submit actions” section and ensure a valid list is selected. If no list or a deleted list is tied to the form, it won’t complete submission.
App Conflict or JS Error

Sometimes Shopify apps or theme code conflict with Klaviyo forms. Try submitting the form in an incognito window with all browser extensions off. If it works there, there’s likely a script conflict. You can also check the browser console (right click > Inspect > Console tab) for red error messages.
Re-Publish Form

Even small edits can sometimes cause glitches. Try unpublishing the form, refreshing your Klaviyo dashboard, and publishing it again.

If none of that works, feel free to share the page URL here and I can help inspect it!

Zac Fromson | Co Founder @ Lilo Social - a full-funnel ecommerce growth agency | lilosocial.com | 2026 Klaviyo Champion

emma.owens

Community Manager

Hi @Wohpe !

Checking in, were you able to resolve this issue? Typically this happens when the Submit form action doesn’t have a list selected to submit to!

M

Marianosantosm

Contributor I

Hi guys! Anyone could get a solution on this??

I’m getting the exact same problem, when someone click “suscribe” it keeps on loading for ever, and discount code is not showing. Just that little “loading” circle

S

saninst

Contributor I

Title: Klaviyo-hosted landing page remains loading and does not create a profile

Hi,

I’m experiencing a technical issue with a published Klaviyo-hosted landing page:

https://inbalance-livsstil-as.myklpages.com/l/Rw8VPx

When a visitor enters a valid email address and first name and clicks the submit button, the button remains in an infinite loading state. The success step is never displayed, and the submission does not create a new profile or add the person to the selected list.

Current configuration:

Action: Submit form
After submit: Show next step
Original list ID: XGEDv5
Both email and first name are required
Landing page is published and Live

Troubleshooting already completed:

Tested with multiple valid and unique email addresses
Tested in an incognito browser
Tested both single and double opt-in
Tested with the original list and a newly created empty test list
Removed all hidden fields
Verified both desktop and mobile button configurations
Republished and refreshed the page after every change
Confirmed that no new profile or list member is created

The same issue persists with every configuration: the submission remains pending indefinitely.

Could someone advise whether this is a known issue with Klaviyo-hosted landing pages, or help escalate it as a platform bug?

Thank you.

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