[2024] I have found a way to log in to my Leagues 4 account, this is the issue probably :D

Hey, thanks for flagging this! Thankfully this is just a minor issue and not relating to the delay we're experiencing today. For details and updates on that, be sure to check our official socials. I checked the issue raised here with the team and it looks like this is a message for world hops that just need updating. The player is on World 375, which isn't a League World, so no cause for immediate concern there, but it will be fixed as soon as we're able to. Thank you for raising and helping us to triage this issue!