Hello @Flood and Flood's wife Sorry for the delay, i had to go to bed 😑 . Can you explain “a few days ago we have assigned a dedicated ip” more please? Does that mean, for your network service, your ISP allocated a static ip? Yes, i suppose it is static, it is dedicated and it is to spijunskaoprema.org. Yes my hosting provider assigned dedicated ip address to this domain by my request. But the situation is little bit more complicated because this website is using CDN through one plugin. And i have entered correct ip address there. And once again, on the other computer in the same network, website is opening without any warnings. So this is a kind of mistery for me, if you know what i mean… :) I have just now tried to open one inner page of website https://www.spijunskaoprema.org/prisluskivaci/ and same thing. Also what is interesting, when i did copy/paste from that URL here it was not pasted as URL but like this Certificate verification problem detected (spijunskaoprema.org) 😀