Having login problems

I'm having some trouble logging into my wp site through the following method: /wp-admin I have done some investigating using this tutorial https://www.ele****themes.com/blog/resources/common-wordpress-login-issues-and-their-solutions

I have tried the suggested ideas on the tutorial, without any luck. I don't think it's a plugin or themes conflict, because I have a dev site with the same plugins and themes active and the login is working fine.

Also, I have replaced the wp-login.php file to see if it was corrupted and I'm still not able to log in. I have also reset the password through my email however still no luck. When I enter in my credentials into the site, it just reloads the screen again without redirecting to the dashboard. Please help.