Code not working

Can someone help me please? i made a block that starts a minigame and its supposed to fill the map with lava and zone block (custom) every 30 seconds and every time its supposed to be more of it but sometimes when we start the game again it spawns the really endgame close big lava and zone and I even made it check if the block is still placed in the same place and also wait 30 seconds before starting the game and it still happens

its a very very very bad code, i have no idea what im doing

i hope someone can help me

https://pastebin.com/jfqeMYxD