Guys, I managed to fix the problem for the Image Editor in this 1.16.9 version!
To fix the problem, follow the step-by-step instructions below:
1º: Install the plugin normally on your WordPress;
2º: After that, go to your hosting server to access the file manually, it can also be through an FTP server;
3º: Look in the Plugin folder for the file "cnd.php" (without quotes), usually in: public_html/wp-content/plugins/ali2woo/includes;
4º: Download the file (or just open it in the server editor, if available) and open it in a text editor (it can even be in Notepad);
5º: Delete the lines with the expression below (approx. line 39 to 42):
if( !a2w_verify_request($_REQUEST['_sign'], $_REQUEST, a2w_plugin_key()) ){
header('HTTP/1.1 401 Unauthorized');
exit;
}
6º: Save the file and send it again to the server;
7º: Ready, your plugin will be working normally.
I hope it helps you, because I've been looking for a solution for a long time and I didn't find it, so I reverse-engineered the Plugin and it worked!
Note: Forgive me if some words don't make much sense, I'm Brazilian and I'm using Google Translator to pass on this tip!