Hi Noor,
I saw that you had added the ‘Incorrect Password Error Message’ that I had requested.
However, when I try to activate Version 1.2.3 on my staging site, I get a ‘Fatal Error’ message as follows:
Fatal error: Uncaught Error: Class 'Kirki\Panel' not found in /home/triauv96vw03/public_html/wp-content/plugins/wp-edit-password-protected/admin/kirki/password-protect-settings.php:81 Stack trace: #0 /home/triauv96vw03/public_html/wp-content/plugins/wp-edit-password-protected/wp-edit-password-protected.php(123): require_once() #1 /home/triauv96vw03/public_html/wp-content/plugins/wp-edit-password-protected/wp-edit-password-protected.php(95): wpEditPasswordProtected->add_all_files() #2 /home/triauv96vw03/public_html/wp-content/plugins/wp-edit-password-protected/wp-edit-password-protected.php(79): wpEditPasswordProtected->__construct() #3 /home/triauv96vw03/public_html/wp-content/plugins/wp-edit-password-protected/wp-edit-password-protected.php(224): wpEditPasswordProtected::instance() #4 /home/triauv96vw03/public_html/wp-admin/includes/plugin.php(2313): include_once('/home/triauv96v...') #5 /home/triauv96vw03/public_html/wp-admin/plugins.php(192): plugin_sandbox_scrape('wp-edit-passwor...') #6 {main} thrown in /home/triauv96vw03/public_html/wp-content/plugins/wp-edit-password-protected/admin/kirki/password-protect-settings.php on line 81
Hopefully, this error text will help you to hunt down the issue.