thongnguyenminh

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This plug in allow you to add or subscribe users to Klaviyo’s list memberships and subscriptions using Elementor pro form.
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Klaviyo offical website: https://www.klaviyo.com/
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To achieve this, the pluin using Klaviyo list’s API (you can read more here: https://developers.klaviyo.com/en/reference/api_overview)
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To use this plugin, you will need an API key provide by Klaviyo when using their services. That mean when using this pluign you are agree with Klaviyo’s Legal, Terms, & Policies here: https://www.klaviyo.com/legal
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Known Issues: 
Fatal Error Call to a member function get_modules() on null:
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<li>Temporary deactivate the plugin</li>
<li>update Elementor/Elementor Pro or run Elementor Database Updater</li>
<li>Reactivate my plugin again</li>
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Include Klaviyo for Elementor pro

Klaviyo's list API integration for Elementor pro form

PluginsCafe

Kaisar Ahmmed

<ol>
<li>
This plug in allow you to add or subscribe users to Klaviyo’s list with gravity forms.
</li>
<li>
Klaviyo offical website: https://www.klaviyo.com/
</li>
<li>
To achieve this, the pluin using Klaviyo list’s API (you can read more here: https://developers.klaviyo.com/en/reference/api_overview)
</li>
<li>
To use this plugin, you will need an API key provide by Klaviyo when using their services. That mean when using this pluign you are agree with Klaviyo’s Legal, Terms, & Policies here: https://www.klaviyo.com/legal
</li>
</ol>

Klaviyo for Gravity Forms

Klaviyo's list API integration for Gravity forms

Include Klaviyo for Elementor pro vs Klaviyo for Gravity Forms