I opened the pack with the FTB Launcher and it told me i had a update for the pack and i updated it and tryed to join and i get this
You need to downgrade the modpack so that it matches the version we are running on our servers which is version 1.0.4
For the time being it is not. When it comes to updating packs we usually like to wait a while before doing so. This way it allows us to minimize any potential issues if the newest version comes with bugs that still need to be looked through. If a server has an update you can take a look at our server specific changelogs that note any server changes. Infinity skyblock one can be found here Infinity Skyblock | MineYourMind Community
I suggest downloading the mym launcher so you dont have to worry about downgrading ever again. Also the pack from the mym launcher will always be in line with the servers.