If a signup form is not working as expected, review this guide to explore common issues and solutions to these issues.
How to Test your Forms
When testing forms, use a unique email address (one that you haven’t used for this form before) for best results. To create a unique email address without creating a new account, you can create an alias for an existing Gmail address by adding a + to the end of your username, followed by a word of your choice.
For example, if your email address is email@example.com, you can use the alias firstname.lastname@example.org when filling out the form. Any messages (including your welcome email and opt-in confirmation message) will be sent to your inbox, but Klaviyo will treat it as a new profile.
Troubleshooting Klaviyo Forms
Please note that signup forms will not render for browsers using Internet Explorer. Legacy signup forms will continue to render for those using any type of web browser.
When using Klaviyo's signup form builder, you may need to follow different troubleshooting steps when your forms aren’t working as expected. Below are common issues that can arise when using the signup form builder.
Form is Not Appearing on Site
If your form is published in Klaviyo but not displaying:
- Verify that you have the signup form code snippet installed on your site.
- If you're using an embedded form, verify that you have the embed code installed on your site.
- Verify that your form is live.
- Review the Behaviors tab of the Signup Form Builder:
- Check the Targeting section to ensure that the form is configured to display on the URL that you are viewing.
- Check the Display Timing section to ensure the display timing settings are not too restrictive. If two or more loading delay options are selected, note that all criteria must be met in order for the form to appear. This means that if "Show when the visitor is exiting the page" and "Show after scrolling 60% of the page" are both selected, a visitor must scroll through 60% of the page and show exit intent in order for the form to appear.
- Make sure you’re not using Internet Explorer. As mentioned above, new signup forms won’t appear on Internet Explorer.
- Re-run the test in incognito/private browsing mode in a new window. It may be that you have already closed the popup, which is why it isn't displaying again. We cookie browsers for one year, so once someone closes a popup, they won’t see the same popup again for another year (unless they clear their cookies).
- If you are using an embedded form, confirm the form’s embed code has been added exactly as it appears in the installation modal, and that it is pasted correctly within your site’s code.
Form Won't Successfully Submit
If your form is not submitting when you click the Submit button:
- Verify that the list the form is connected to has not been deleted.
- Verify that the button is a Submit button, not a Close button.
- Check your inbox for a confirmation email. If your list is set to double opt-in, you will not be added to it until you confirm your subscription.
Form Looks Different than the Editor
Klaviyo forms should render on your website as they have been designed in Klaviyo. If this isn’t the case, then your site’s CSS is overriding the styling of the form. Look for !important tags in your CSS and remove these if possible. Your developer can also use your browser’s developer tools to inspect the site’s code and identify the problem CSS. If you are still having trouble, find help here.
Form is not Adding People to List
If people are filling out your form but not being added to your list:
- Make sure that you’ve selected a list in the form’s button settings.
- Check your list’s opt-in settings. If the list is set to double opt-in (recommended), then the missing subscribers likely did not complete the confirmation step.
If the number of form submissions doesn’t match the number of people in your list, subscribers might not have completed the confirmation step (if your list is set to double opt-in). It could also reflect duplicate entries. If a subscriber fills out a form repeatedly, each entry will count as one “submission” in your form analytics, but they will only appear in your list one time. Finally, it’s also possible that some submissions came from bots or list bombers. Klaviyo has list bombing protections in place to protect you from these cyber attacks.
Unable to Detect Installation
You may receive the error message "Unable to detect that signup forms are successfully installed on your site. Please view the installation documentation." but have correctly added the installation snippet to your website (or are using a prebuilt integration that does this automatically). This may appear if you are using a tag management platform (eg. Google Tag Manager) or some other method to deliver the snippet to your website when the page loads.
This message will not prevent you from publishing a form so if the snippet is correctly installed on the website you should be fine to ignore it. If you are still having trouble with this, please contact us.