Website works for other people but not me

Since last week, I’ve been unable to access my website (wordpress with Bluehost, using Firefox with Linux on a Dell laptop), either from the admin side or the normal side. I’m getting an “unable to connect” error message, saying to check my internet connection.

I’m also not able to access it through my other home laptop or through my phone when using WiFi, but I did get it on my phone using data. Presumably it’s working for other people, because I got a message through my contact form in my email, plus two email subscribers in MailerLite (my website is the only place to join). I also had a friend check, and she said it worked fine for her.

I’m not a very techy person, but could it possibly be my home WiFi that’s the problem? (It’s been fine for everything else.) Or is it more likely to be something with my computer or website?

(My website is authorgracemacpherson.com if it’s helpful to see it.)