Easily add the AddPay payment suite to your WooCommerce store.

Noted That:

To install correctly this woo-addpay-gateway.zip.
Fisrt Download the woo-addpay-gateway.zip to your computer
Extract/Open woo-addpay-gateway.zip to Your Computer.
Then, Find readme.txt file inside woo-addpay-gateway.zip and Open readme.txt.
Now, Read the Requirements of this plugin. Which Wordpress Version and PHP Version are required to run this Plugin in Your Wordpress Site.
Then, Follow the the Tips Below.

Start the Tips:

1. First Download "woo-addpay-gateway.zip" Plugin to your Local Computer. (Click Download)

2. Then, Login to your "yourdomain.com/wp-admin" Dashboard.

3. Then, Click on "Plugins" + "Add New" from left sidemenu of Dashboard.

4. Now, Click on "Upload Plugin" button.

5. Now, Browse "woo-addpay-gateway.zip" Downloaded plugin from your computer, Where you downloaded woo-addpay-gateway.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "AddPay WooCommerce" folder is added on left sidemenu. Now, Click on "AddPay WooCommerce" folder.

Noted that: If you do not see "AddPay WooCommerce" folder on left sidemenu then, see at left sidemenu "Settings" or "Tools".

8. Now you configure yourself oR Watch video tutorial below about AddPay WooCommerce Configurtions and Settings or How to work "AddPay WooCommerce" in your WordPress site.

After Activated Plugin According to Step-6 then,

Go to "Plugins" + "Installed Plugin" from Wordpress Admin Panel Leftside Menu.
or Direct go to: https://yourdomain/wp-admin/plugins.php
Then, Find "AddPay WooCommerce" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is AddPay WooCommerce
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide
Automatic Install Go to: WordPress Admin > Plugins > Add New and Search for AddPay Install Now and Activate the extension. Navigate to the plugin settings, enter the generated client ID and client SECRET, hit save. Test your checkout with a product and select AddPay as the checkout method Manual Install Download the .zip file: AddPay WooCommerce. Go to: WordPress Admin > Plugins > Add New and Upload Plugin with the file you downloaded with Choose File. Install Now and Activate the extension. Navigate to the plugin settings, enter the generated Client ID and Client SECRET, hit save. Test your checkout with a product and select AddPay as the checkout method

Guide

Automatic Install

Go to: WordPress Admin > Plugins > Add New and Search for AddPay
Install Now and Activate the extension.
Navigate to the plugin settings, enter the generated client ID and client SECRET, hit save.
Test your checkout with a product and select AddPay as the checkout method

Manual Install

Download the .zip file: AddPay WooCommerce.
Go to: WordPress Admin > Plugins > Add New and Upload Plugin with the file you downloaded with Choose File.
Install Now and Activate the extension.
Navigate to the plugin settings, enter the generated Client ID and Client SECRET, hit save.
Test your checkout with a product and select AddPay as the checkout method

woocommerce, store, your, suite, addpay, payment, easily,

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Reffered: https://wordpress.org/