Unknown host

Ok so i want to start out by saying i have the correct ip. I join the game and play for a while and then i leave for a break. When i come back and refresh the page it randomly says “Unknown host” or “host not found” keep in mind i’m using the same ip as before. and even other aternos servers i’ve saved some randomly says unknown host and it only comes back when i restart my pc. Please fix this as it is very annoying to restart my PC after almost every game