Weird quest? Got stuck all day

PRO Username: MiiTra7

Do you have active membership?: Yes

Your knowledge about PRO: Advanced Knowledge

What have you done before the problem was there?

I only followed the story of the game

What have you already tried to solve the problem?

I've checked a lot of post trying to find something related to this but without positive results.

Description and Message

First of all sorry for my bad english.

Here it is:

i went to five island following the quest when i got stuck trying to enter into the team rocket's hideout. i woman "asked" me to find 5 team rocket members.

So i found one in the meadow, another one at the end of the water labyrinth, two of them in the lost cave, but the last one is nowhere. I really tried to be careful and find the last member, but i couldn't. I asked for help to other players but they always told me they didn't do that quest (?) (how they went right into the hideout then and i can't?). I talked to a gm i saw, but he-she didnt know either, he-she recommended me to go and see the "resort gorgeous" there would be the last member but NOPE. there is no last member and now this situation is so frustrating and i cant even leave the island.

I will be so thankful if somebody can give any kind of help. :)