Grant

My coworker has a premium support ticket open for this issue and they told him that 5.11.0.3 is the one that fixes this issue. So @stephenyeo if you’re still having the problem, this would be the one to use.

I haven’t tested it myself because we’re going to stick with 5.10 until we’re though with the current round of ticket sales, but I thought I’d mention it because the release note is still somewhat ambiguous.

Yeah, I’m not sure. Given the difficulty we’ve had rolling back to an old version (having to reconnect Stripe, and essentially reset all tickets) I’m not updating until they mention they fixed this specifically.

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;
}