CurseForge is finally accepting Server Packs for modpacks running Forge 1.16.5 36.0.1. That means that the Server Packs for versions 4.4.4, 4.5.5 and 4.5.5a are now available for download:
4.5.5a: https://www.curseforge.com/minecraft/modpacks/survive-create-prosper-4/files/3177935
4.5.5: https://www.curseforge.com/minecraft/modpacks/survive-create-prosper-4/files/3177567
4.4.4: https://www.curseforge.com/minecraft/modpacks/survive-create-prosper-4/files/3171621
