On February 26, 2015 Google announced that all websites must be mobile friendly since most individuals use their smartphones for online searches. What does this have to do with you? If you did not have a “mobile-friendly” site by April 21, 2015, your website(s) ran the real risk of falling off the SERPs and into the abyss, which can mean not only lost rankings, but also lost visitors, opt-ins, sales, revenues, profits and more!
Here is Google's blog post for your reference: https://googlewebmastercentral.blogspot.com/2015/02/finding-more-mobile-friendly-search.html.
For $75 I will create a mobile friendly website for you. A mobile website will increase your Google rankings, which in turn will drive more traffic to your website and more revenue.