get a national pokedex by seeing every Pokemon in sinnoh
they will disappear after you get the national dex
obtain national pokedex
To get past the people that are blocking your way, you need to see every Pokemon in the shinnoh dex and then get the national dex.
you need to fight them to get past
You to have a tag battle with them with your rival as your partner.
Complete sinnoh dex
fight team Gaelic and then there gone
in tercessuinotlim past the area where polish is
You have to see all 150 pokemon in the Sinnoh Region.im pretty sure you have to win the battle room all the way till your finished
Finish your pokedex.then go to prof. rowan and talk to him.Then prof oak will walk in and give you a national pokedex.Go back to the battle zone and they will be gone.BEWARE:people who want to battle you past the battle zone will have lv.50-52 pokemon.
u have to have th' ndex
they went away after i visited the resort area