This thread is resolved. Here is a description of the problem and solution.
In the admin strings page, when I select a string and then click to apply, the string is not displayed for translation on the WPML> String Translation page.
You should increase the max_input_vars limit of your PHP. You can use php.ini or .htaccess if your host allows.
=> php.ini file
Open the php.ini file and insert/edit this line:
max_input_vars = 10000
=> .htaccess file
php_value max_input_vars 10000
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.