What you’re saying is you that you bought kreds for 100$ without actualy wanting to buy anything? You could have saved and bought a console ( unless you’re one of those rich kids who don’t know what saving is, wich I asume you are). Have you ever considered buying stuff that you need ( like clothes or food) instead of spending it on random stuff?
Monsters that block your pasage in battle area so you could pass further only after you defeat it. You can fight this monster by clicking “Fight the defender” button. Once defeated monsters don’t come back. Auto fight can’t be used against defenders.