Why might the site be unavailable?

Question

Computer networks

Good afternoon.
Faced a problem. I work with the site cosmoprofi.shop. At work and at home, the same provider - Rostelecom.
The site is available at work, not at home. (I checked at home with 2 PCs)
In the browser, it gives a network error. I also can't connect via ssh or ftp.
At the same time, ping and tracert find the domain.
If you connect to the VPN server via OVPN, then all problems disappear.
I talked to the TP provider, they say they have no problems.
What could be the problem?

Answer 1

They have a problem.
Site available - UA

Answer 2

Provider cuts. 100% taking into account what Rostelecom. Yes, and they have like a house ru, everything is always ok))) but nifiga does not work normally))

Answer 3

I talked to the TP provider, they say they have no problems.

This is what they all sing. Polls. They also like to sing that they normally get a MAC address and look for problems on their side - this song is started with or without a reason. Usually without.

At the same time, ping and tracert find the domain.

They show little. Ping works over icmp protocol, tracert over udp. Your site works but tcp. Therefore, it must be checked according to this protocol. Try wget or curl with the appropriate options.
And keep in mind, the dip is already sitting in order, steamed with work and study, students. Therefore, it is necessary to prepare the argument comprehensively.

Answer 4

Have you made any firewall settings on your home router?