TIMED OUT - how to solve this problem?

Hello, I play on my own aternos server since few days. Last time was today about 6:30pm when I had to go so I switched off my computer.
Now I want to play on my server BUT I can't! My other friends can normally enter and play but I can't.

When I want to connect, I see in Minecraft only "Loading terrain". Meanwhile in the console I see:
alvaro_fernandez[/xxx.xxx.xx.xxx:xxxxx logged in with entity id 13332 at ([world]55.29990340772737, 71.0, 24.578440060528266)

and then I see "Disconnected" or "Timed out" in Minecraft and in the console:
> [22:30:56 INFO]: alvaro_fernandez lost connection: Timed out >
[22:30:56 INFO]: alvaro_fernandez left the game

My brother has the same problem, we use the same router connection. When I use different Internet connection (for example Wi-Fi hotspot from my smartphone) I haven't this problem!


My Internet connection is stable. I can connect on other servers but on my aternos server I can't. I reset my router and I really don't know what I could do now.... Please help me I want to play with my friends;)) How to solve it? I want to play with them on my Internet.

Minecraft version 1.12.2