Cant Connect to Aternos server

So Me and my friend made an aternos server about 3 days ago, on the first day my friend was able to join but I couldn't due to the error "Forcibly closed by the remote host" so the next day we tried again this time I changed my DNS though it wouldnt work when i set it back to the regular DNS I usually use and not the google DNS it suddenly worked, we played for a while until we both left, the next day or today we tried again but it just refused to work, I tried changing the dns and setting it back to normal but it wouldnt work again, I tried going into the control panel to change java settings in advanced security but no, I tried using firewall both disabling it and allowing Java to pass through but it wouldnt I tried using command prompt and flushed my dns but it only changed the error from "Forcibly closed" to "Connection timed out no further information" I also tried resetting my router but it still wouldnt work, also there wasnt a whitelist so im confused

i already tried the dyn ip im now about to read help soo yeah if it works or not ill just report it here