I failed to beat eater of worlds and used up all the portals

Since apparently I find it very difficult to google things about this game, can someone please explain to me what I have to do to get another green quest item for my map that allows me to fight the eater of worlds again? Please, explain it like I'm five. I don't need to hear anything about alt slamming and I'm not sending you my pob (sickos) just please, like I just started playing the game, explain to me how I can continue this quest. Thank you.

If it is still the quest invite (the green one) you just do one t14+ map with eater of worlds on your map device active and you'll get another one.
If you already killed eater, you only get another invite after 28 Eater influenced T14+ Maps (the counter is on the bottom of your atlas for that after you won your initial quest eater fight.)