The site does not load: the web hosting service has no idea!

Hi guys

I'm ripping my hair tbh. I am in a "fully managed" VPS plan, but it turns out that my host is useless with support.

For three days since its configuration, the domain I am using does not load.

Me and they have verified all DNS settings and nothing seems to be wrong.

Basically now they are washing their hands.

The domain is

Any suggestions you can give about what to review, or any problem you can detect, would be amazing.

Thank you