Quform
Quform is a popular contact form plugin for WordPress. You can easily integrate it into many other popular platforms using the Advanced Form Integration plugin. It requires a Pro license of the Advanced Form Integration plugin to use the feature.

To start integrating Quform, go to the Advanced Form Integration plugin menu and start new integration.
Title: A default title will be auto-added but you can rename it to a meaningful one. That can help you to quickly recognize the correct one when you have several integrations.
Form Provider: Select Quform from the dropdown. Please remember that the Quform plugin must be installed and activated.

Form Name: A list of all forms created under Quform will be populated here. Select the one that you want to connect with.
Platform: Now select the platform you want to connect to and finish the setup. Please check Receiver Platforms documentation to know more about that specific receiver platform.