Please see this guide to learn how to install a WordPress plugin.
Environment Requirements
You need to ensure that your WordPress/PHP environment should have the following setup properly:
post_max_size
– Should be at least two times the size of the image being editedupload_max_filesize
– Should be at least two times the size of the image being editedallow_url_include
= Should beOn
request_order
Should be set to'GP'