mahabubcse

A Plugin is causing compatibility issues. If you can access the Administration Screens try deactivating all of your Plugins and then reactivating them one by one. If you are unable to access your Screens, log in to your website via FTP. Locate the folder wp-content/plugins and rename the Plugin folder plugins_old. This will deactivate all of your Plugins. You can read more about manually deactivating your plugins in the Troubleshooting FAQ.
Your Theme may be causing the problem. This is especially likely if you are experiencing the white screen of death after you have just activated a new Theme, or created a New Site in a WordPress Network. Log in to the Administration Screens and activate the default WordPress Twenty Sixteen Theme. If you can’t access your Administration Screens, access your website via FTP and navigate to the /wp-content/themes/ folder. Rename the folder for the active Theme.
Your Theme directory may be missing or renamed. This is common for developers who have just created a local development environment and cloned the database, which is pointing to a theme (or theme directory) that might be missing or renamed. To test this solution, try accessing wp-login.php or /wp-admin/. If you see anything, this is a good indication it’s theme-related. Log in as an administrator, then try to view the front-end and you should see a WordPress error message to the effect of: The theme directory “{theme-name}” does not exist. You can solve this in any n umber of ways, including switching themes on the admin side, renaming your directory, or editing the “theme” and “stylesheet” records in wp_options
The WP_DEBUG feature often provides additional information. If you are still experiencing problems and are looking in your error logs you can check out the PHP errors below for more information.

Hey there! i have used a pricing table and found it is really effective.Here i am giving you some description of it

GS WordPress pricing table plugin creates custom post type to add and publish beautiful pricing tables / comparison tables on WordPress site. Best Responsive Pricing Table to add features of your different plans. Choose different themes & other options to display anywhere at your site using shortcode like [gs_pt id=”table_id”]

If you want to see these this plugins demo you can visit the GS WordPress pricing table plugin

The 500 internal server error runs on every page of your site when there’s a problem with the server or file system that’s powering your site. The cause most likely occurs in the root directory, where your WordPress files are, but it can also be caused by a problem on your host’s server.
This is one of the most frustrating errors that can occur in WordPress. It never has a straightforward solution, requiring a lot of troubleshooting that can eat up your time and patience. But we’re going to try to help alleviate some of that stress by suggesting several solutions to this problem and walking you through each.
For more details you can visit here

Hey! Dear you can use the profile builder plugin it will help you to create profile and subscribe the necessary things.In the normal sense an administrator will add the user or delete the user.

Hey Please recheck this link and settings of your plugin.

Checking to ensure that you and your web host have the minimum requirements to run WordPress.
Downloading the most current version of WordPress.
Unzipping the downloaded file to a folder on your hard drive.
Creating a secure password for your Secret Key
Keeping this webpage open so you have it handy during the installation.

Be safe when you will work outside public_html folder

Log in to your site.
Go to the Administration > Settings > General screen.
In the box for WordPress Address (URL): change the address to the new location of your main WordPress core files.
In the box for Site Address (URL): change the address to the new location, which should match the WordPress (your public site) address.
Click Save Changes.
(Do not try to open/view your site now!)
Move your WordPress core files to the new location. This includes the files found within the original directory, such as https://example.com/wordpress, and all the sub-directories, to the new location.
Now, try to open your site by going to yourdomain.com/wp-admin. Note, you may need to go to yourdomain.com/wp-login.php

For a details information you can visit these links
https://codex.www.ads-software.com/Moving_WordPress

Hey you can try this two links
https://codex.www.ads-software.com/FTP_Clients

https://codex.www.ads-software.com/Using_FileZilla

I think it will help you a lot.

Download a fresh copy and try it again. It’s not a major issue. Delete the old Wp-admin folder and Wo-content/directory.