Friend can't join my aternos server. It is skyfactory 4 hosted on aternos

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    Hi, both me and my friend have the same version (most recent) of sky factory 4 I have started up my server and successfully joined it and everything has worked perfectly for me. Unfortunately it does not let my friend join the server. Well... he joins for a few seconds and then is timed out. He is unable to move because on his side he has not joined the server yet but on my side i see that he has "joined the game". When he joins he is floating where spawn is and is invincible as if he had not properly logged in yet.
    These are the console logs that it gives when he gets kicked. Any help would be much appreciated, Thanks a lot :).


    [14:35:16] [Server thread/INFO] [FML]: Unloading dimension 144

    [14:35:31] [Server thread/INFO] [minecraft/NetHandlerPlayServer]: Damian134 lost connection: Timed out

    [14:35:31] [Server thread/INFO] [minecraft/DedicatedServer]: §eDamian134§r§e left the game§r

    Does your friend also get the timed out error client side when he tries to join?