I read at forum this words ''Players that once use a ticket to enter at the island, can leave and enter Birth Island till caught the Pokemon. ''Also the world quest guide says, ''Until you capture the Pokemon that was spawned, run away from it or faint against it will remain on the same spot. Therefore, you can leave the island in order to get Synchronize Pokemon from the Pokemon Center or to buy Master Balls. ''.All my pokemon died at the encounter but the mysterious captain wouldn't let me go back to the island,please help me. Thank you in advance.

Also the world quest guide says, ''Until you capture the Pokemon that was spawned, run away from it or faint against it will remain on the same spot. Therefore, you can leave the island in order to get Synchronize Pokemon from the Pokemon Center or to buy Master Balls. '

 

What this is saying is the pokemon will be there until you battle it. It is worded in a difficult way. But it is trying to say That the pokemon will be there, until you

1) Catch it

2) Run from the battle

3) Faint to it

i am a noob then,ty i am going to be more cautious next time!

Sorry about that. I am bring it up to someone to re-word it on the wiki to help out a bit more.