Add SSL to my existing website

Job ID: 33554489

Budget: $30 – $250 USD

I have a website, themultitoolstore.com, which was built by StoresOnline in 2010. They were bought out by Crexendo in about 2015 and I no longer have any technical support from them. I need to update the SSL on my website but have no idea how to do it. Can you help me? The original software is propriatary so I don't know how to access it.
Related categories: PHP Website Design Web Security WordPress HTML