"Forcibly closed by the remote server" and "Disconnected" (Tracerouted dynIP)

So my friend cannot connect to our minecraft server which she can before, we played 3 weeks on it I think and it's only been happening now. She can connect to other servers fine.

She gets an error of "forcibly closed by the remote server" which I found a solution for, tracerouting the dynIP, had her do it and thought we fixed it but this time the error changed into

"Failed to connect to the server"

-Disconnected-

and sometimes still gets an error of forcibly closed, this is getting us frustrated as we are looking for solutions literally everywhere but could not find any, please, a help would be appreciated. Thank you, we would really love to play our server since we've been so burned out quarantined at home stuck with online school. Thank you!

Quote from Toothy

Did you send the traceroute to the email mentioned in the support article?

Oh so you have to actually send a ticket, I thought that was optional. She doesnt have an aternos account should she make one or can I use mine at the fill up form?

Quote from Toothy

The traceroute does literally nothing, it's not a fix. You can simply send it to [email protected]

Sent a ticket,does it fix to the certain dynIP or is it permanent? because when the server resets it changes the dynIP right? like nightfury.aternos, sometimes it's pufferfish.aternos.host, etc. or is it port dependent?