Build a Bot boosters available for previous levels

Mine's back.  I play on windows 10 app.  It's not on the regular browsers

King clearly does not want to listen to its loyal customers I agree game has got boring now seems like they are trying to get more money from everyone they halved the gold bars in the piggy bank from 60 to 30 and still charge the same money.
some people can still go back to easier levels and collect build a bot ammo so come on king turn it back on before your customers start boycotting you!

I have had jackpot twice it is rigged

Please bring back the ability to get your boosters on previous levels.  I started playing this game as a means to relax (It was challenging enough enough keep me interested while not being stressful - Have enough of that in the Real World) but this Build a Bot has taken all the enjoyment out and it takes a couple of days to clear some levels.  This is no longer fun and I no longer want to log in.

When you say build a bot is back, do you mean you can go back to previous levels that you have already passed to build your bot?