Sometimes, you may be facing a problem that the table data is not saving. You wonder why this is happening? Well, It's can happen because of two reasons.
One, If you are using any cache plugin, it can happen because of that plugin. Please deactivate that plugin and try to save your table data again.
The second reason is if you have vast columns.
In this case, you have to increase the limit of max_input_vars.
Normally the default value of max_input_vars is 1000;
How to Increate max_input_vars?
There are many ways of increasing max_input_vars in your wp site. I will explain only two ways here, you can follow anyone. Even you can google for this issue, you will find many tutorials.
Directive for .htaccess:
open your .htaccess file and edit and add the following line at the end of your .htaccess file.
Directive for php.ini or .user.inimax_input_vars =4000
Directive for wp-config.php@ini_set( 'max_input_vars' , 4000 );