Oh, I think I should work a little bit more on the level what explains game mechanics.
You couldn't set a spawn probably because you were out of helf points ( 3 little dots above the player indicate them, so then you die with spawn point set you lose one little dot, when you're out of dots you can't set a spawn ) Each of those little collactables adds you 1 helf point, so you wasn't able to collect them because you had maximum amount of health points.
And I totally forgot to add feedback than setting a spawn point, I'll fix it.
Thanks for you feedback, I really appreciate it