Information

Minecraft version: 1.20.1
Modloader: Forge
Forge version: 47.2.19
Environment: Multiplayer

Mod name: Starter Kit
Mod version: 1.20.1-6.5

Description

I have it set up so that the players on my server (or who use my modpack) can choose between five different kits; it works fantastic in singleplayer and for the person to log in on the server, but after that the gui doesn't show up for anyone, whether it's in a lan world or on my server. Other players can use the commands, but I'd much rather them be able to see the gui so they can better see what their options are.
I've tested both with my full modpack and with only the mods required for my custom starter kits to have most of their items.

Update: it seems that there's only an issue when there's already a player on the server? One of my other smp members joined after a server restart when no-one else was on and got the gui, but any other time it's working how I said in my initial message.

Thank you for opening the issue and giving the mod a try! This has been fixed in version 6.9 of Starter Kit.

https://www.curseforge.com/minecraft/mc-mods/starter-kit/files