Fortnite Zonewars map - when a new player joins in the lobby he is stuck on spectating other opponents

I am new to UEFN and made a zonewars map. It works well but when a new player joins the game, he’s stuck on spectating other opponents and wouldn’t spawn into the game.

The island settings are → Default Class Identifier - Class 1
Revert to Default Class at - End of Round
Spawn Limit - 1
Join in Progress - Spawn on Next Round
After Last Spawn Go To - Spectating

Do you know what needs to be changed please? Is this a bug or do I have something wrong from the island settings? Thank you!

How many rounds do you have set for the win and how long is each round? Your setting look like they will have them spawn into the next round. Hope this helps and happy creating!