Paymattic
This article explains how to integrate Payrexx into Paymattic in order to accept payments from customers via your website.
General Information
Paymattic is a WordPress plugin that allows users to manage payments, donations, and subscriptions without any coding skills. By integrating payment solutions such as Payrexx, you can receive payments directly from your customers.
Links
Paymattic Website
Paymattic Documentation
Setup
Follow the steps below to integrate Payrexx into Paymattic.
Installing the plugin
Log in to your WordPress account.
Install the Paymattic plugin as described in the following instructions:

Navigate to Plugins > Add Plugin.
Search for "Paymattic".
Click "Install Now".
Then click the blue "Activate" button:

Configuring the plugin
Configure the plugin by following these steps:
In the WordPress main menu, click on Paymattic Pro.
In the submenu, click on Payment Gateway.
Then select Payrexx from the menu.

Decide how the checkout process should appear. You have the following options:
Modal Checkout Style: The user remains on the page and the payment form opens as a pop-up
Hosted on payrexx.com: The user is redirected to the Payrexx checkout page

Configuration of Payrexx
In the merchant dashboard of your Payrexx account, navigate to API & Plugins.
Click on "Add API Key":

Assign a name for the integration and save your settings by clicking "Add":

The API Key for Paymattic now appears in the list of active integrations. Copy the key to your clipboard – you will need it in the next step.

Configuration of Paymattic
In WordPress, go to Paymattic (Pro) > Payment Gateway > Payrexx.
Paste the API Key into the corresponding field.
Enter the instance name of your Payrexx account.
Click "Save Settings" to complete the integration.
Payrexx and Paymattic are now successfully connected.
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