WordPress Login doesnt respond after using Filezilla to upload my files on the server

Check the wp-config.php file on your site. It should contain the database credentials (db name, user, password) for your site. Verify those values. Maybe even change the password via your hosting control panel (MySQL Databases) for the user for that database.

Then check the error.log file in the root of your site, and in the wp-admin folder. That might help out.

There are other things to check out; this guide should help you get started. https://wordpress.org/support/category/troubleshooting/

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