[SOLVED] Redirect problems with ?fbclick= and Query Strings Params

Use the WP File Manager plugin. Navigate to the wp-content/plugins/quick-pagepost-redirect-plugin folder.

Download the page_post_redirect_plugin.php file. This is your backup!

In WP File Manager, open for editing this same file page_post_redirect_plugin.php

Go to line 2116 and insert a new line below. Paste:

/* START OF CORRECTION BY BRUNO BIONDI */
$finalNoQS = strtolower( explode( '?', $getAddress )[0] );
/* END OF CORRECTION BY BRUNO BIONDI */

Go to line 2166 and insert a new line below. Paste:

/* START OF CORRECTION BY BRUNO BIONDI */
elseif( array_key_exists( $finalNoQS . '/', $haystack ) ){
     $index = $finalNoQS . '/';
}elseif( array_key_exists( $finalNoQS, $haystack ) ){
     $index = $finalNoQS;
}
/* END OF CORRECTION BY BRUNO BIONDI */

Clear cache and test!

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