Website Cannot Be Viewed

Hi,

I have a site named https://speedyhomesolutions.com.au

The last thing that I did was putting a linkedin username into a plugin called Social Stickers. After that, I couldn’t see the site anymore. It always says Connection error. What do you think is the problem of it? I also asked someone if they can view the site and according to them, its ok. I am the one who can’t view it. I also transfer to another pc and I can view it. After messing up with the plugin there goes the error again. How can I solve it?

Looking forward for your response.