Thanks for sharing @Edyus! So I must immediately drop in with some honesty: I'm personally not really good with IP addressess and don't fully understand what's going on in this topic. So I've requested some help from someone who does. Also @tobiastheebe, are you able to help out here?
He's mentioned that within our systems nothing has changed recently that would cause the issues that you now experience. He also says that he can tell from your screenshot that you're trying to reach ipbuild.ro, however it doesn't appear to have an IP address. When he tried to reach ipbuild.ro, he wasn't able to reach it either (with wifi and 4G) and he wasn't able to open any sites.
In turn that raises a few questions.
1. Could you share screenshots of ping/traces that do work with your 4g connection?
2. You mentioned there are two IP access problems: 78.97.84.24 (for VPN connection).
What do you mean by that exactly? Do you see any errors, are pages not loading? Can you reach the VPN but does it not work once reached?