G'day, Aternos.
I don't expect this is be accepted but might as well give it a go. (also currently adding the mods of this modpack one by one which is painful but nothing to worry about)
My mates and I are trying to play with this mod pack and Hamachi isn't really giving us the greatest time so I turned here and found that the mod pack wasn't available so I followed the whole "Suggest Mod/Modpack" which lead me to the forum threads by DominikP7 & Xerzhis (links below) and both were [Denied] for reasons [Too Heavy]
DominikP7:
Better Minecraft Fabric
Xerzhis:
[Fabric] Better Minecraft 1.17.1
I wouldn't mind some clarification on the reason as I'm not very savvy in terms of how mods work on servers and whatnot so forgive me on that part.
Cheers.