If it works from the phone it must be something PC related, you could try to post and take a look at the browser's console for any error
It is still probably some domain not getting resolved, it could be at the DNS level (are you using one with block lists integrated?)
You could try changing it to 1.1.1.1 or 8.8.8.8 for a test, if you are not already using them
Thank you for commenting!