This plugin gives you the possibility to get a scratchable area, like a gift card for example. Based on a simple Shortcode.

Noted That:

To install correctly this scratching-effect.zip.
Fisrt Download the scratching-effect.zip to your computer
Extract/Open scratching-effect.zip to Your Computer.
Then, Find readme.txt file inside scratching-effect.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 "scratching-effect.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 "scratching-effect.zip" Downloaded plugin from your computer, Where you downloaded scratching-effect.zip According to Step – 1 Above then, click on "Install Now"

6. Now, Click on "Active Plugin"

7. Then, See left sidemenu. "Scratching Effect" folder is added on left sidemenu. Now, Click on "Scratching Effect" folder.

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

8. Now you configure yourself oR Watch video tutorial below about Scratching Effect Configurtions and Settings or How to work "Scratching Effect" 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 "Scratching Effect" Activated Plugin from Plugin List.
Then, Click on "Settings" from Plugin that is Scratching Effect
Now, Edit/Add/Config the setting and Click on "Save Changes" button,

Guide
You just have to download the plugin from the WordPress Repo. Activate your plugin on your Dashboard. At this point you will see a Scratching Effect tabs, you just have to create a new Scratching Effect by completing the fields. Once created, go back to the list of your Scratching Effect and you will see a Shortcode. All you have to do, is put the Shortcode wherever you want to get your Scratching Effect.

Guide

You just have to download the plugin from the WordPress Repo.
Activate your plugin on your Dashboard.
At this point you will see a Scratching Effect tabs, you just have to create a new Scratching Effect by completing the fields.
Once created, go back to the list of your Scratching Effect and you will see a Shortcode.
All you have to do, is put the Shortcode wherever you want to get your Scratching Effect.

example, card, based, simple, shortcode, gift, like, gives, possibility, scratchable,

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Reffered: https://wordpress.org/