Computer Help and Support

A few questions for you --

1) Have you shut down and restarted your Mac? A reboot clears up a lot of issues. Given that you can
connect to your wifi+Internet with your other devices means that your local wifi+internet are probably fine
(e.g. the JetPack is likely working ok).

If no, then try again after a shutdown and restart. Might as well power off and on your Jetpak too.

If yes, then ...

2) Can Safari connect to other sites?

If yes, then this a problem with Safari and that particular site (server). Something like resetting Safari
or triple-checking the site address might help. Make sure you have the https://TheSiteName.com typed
in correctly (or http://TheSiteName.com if it's an older site that doesn't do "https" yet). Clearing the
Safari cache might help.

If no, then ask:

3) Are the other services on your Mac that need Internet working? E.g. the app store and software update?

If yes, then there's a problem with Safari. Hopefully clearing the cache will be enough, it's possible that
it's got some kind of broken ad-blocker or other plugin causing problems.

If no then your mac+wifi+internet are broken. Make sure you're connected to your WiFi correctly. A review
of the network preferences panel (in the System Preferences application) is needed ... you might need
some help to interpret / reset this.

Good luck