Modify wordpress plugin

Avg Bid (USD)
Project Budget (USD)
$30 - $5000

Project Description:
There is a wordpress plugin that called Content Warning V2 the author's site is here: the plugin opens a dialog box when you first arrive at the site and it warns you there is adult content on the site and asks you to choose ENTER or EXIT. Press ENTER and you go the the front page of the site. Press EXIT and it takes out to some URL you specifiy in the admin section. I would like the plugin modified to ask the visitor's age. and if they enter an age that is less than 21 years old, and press ENTER, it will execute as if the user had pressed the EXIT button. If the age entered is 21 years or older, it will proceed to the front page of the website. See attachment for more specifics.

Skills required:
PHP, Software Architecture, Software Testing, Web Hosting, Website Management, Website Testing
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