Title: Compatibility Issues
Last modified: November 5, 2020

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# Compatibility Issues

 *  Resolved [jordanrevell28](https://wordpress.org/support/users/jordanrevell28/)
 * (@jordanrevell28)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/compatibility-issues-35/)
 * The wordpress plugin is not compatible with any wordpress version, as I used 
   the latest one and the old one on both no plugin settings shown at backend.
 * Test your plugin with all wordpress versions before writing tested upto 5.5.3
   version.

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Contributor [Patrick Graham](https://wordpress.org/support/users/prileygraham/)
 * (@prileygraham)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/compatibility-issues-35/#post-13626003)
 * Hi [@jordanrevell28](https://wordpress.org/support/users/jordanrevell28/),
 * Thanks for getting in touch. This plugin has been tested on WordPress v5.5.3 
   prior to updating the tested up to version (just tested again on a fresh 5.5.3
   instance as well to double check). We also have not received any other similar
   reports.
 * Sometimes this can happen if you have a plugin installed that conflicts with 
   Postmark, such as another plugin that overrides `wp_mail`. I recommend checking
   for conflicting plugins and your WordPress instance’s error logs to see if you
   can spot the issue.
 * Please reach out to us at [support@postmarkapp.com](https://wordpress.org/support/topic/compatibility-issues-35/support@postmarkapp.com?output_format=md)
   if you have any questions or want to provide any additional information.
 * Thanks,
 * Patrick
 *  [Grant](https://wordpress.org/support/users/grant10k/)
 * (@grant10k)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/compatibility-issues-35/#post-13692567)
 * We found the same issue on our site. Installed plugin, but no settings visible.
   Only “General”, “Send Test Email” etc tabs were visible, but none of them worked.
 * The theme framework (Bones) has a function that removes a lot of “unnecessary”
   WordPress features like RSS links, parent post links, etc.
 * The one causing the issue was something at removes the default version number
   for loaded scripts. /js/script.js?ver=5.3.3 becomes /js/script.js. When removed
   the remover, Postmark started working. So it seems that postmarkapp requires 
   the version number on the generated WordPress scripts.
 * These are the lines we **Removed** from our theme
 *     ```
       	// remove WP version from css
       	add_filter( 'style_loader_src', 'bones_remove_wp_ver_css_js', 9999 );
       	// remove Wp version from scripts
       	add_filter( 'script_loader_src', 'bones_remove_wp_ver_css_js', 9999 );
       ```
   
 * And the function itself
 *     ```
       // remove WP version from scripts
       function bones_remove_wp_ver_css_js( $src ) {
           if ( strpos( $src, 'ver=' ) )
               //$src = remove_query_arg( 'ver', $src );
           return $src;
       }
       ```
   
 *  Plugin Contributor [Patrick Graham](https://wordpress.org/support/users/prileygraham/)
 * (@prileygraham)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/compatibility-issues-35/#post-13700419)
 * Great info – thanks for sharing [@grant10k](https://wordpress.org/support/users/grant10k/)!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Compatibility Issues’ is closed to new replies.

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 * 3 replies
 * 3 participants
 * Last reply from: [Patrick Graham](https://wordpress.org/support/users/prileygraham/)
 * Last activity: [5 years, 6 months ago](https://wordpress.org/support/topic/compatibility-issues-35/#post-13700419)
 * Status: resolved