WORLD GENERATION IN REXXIT: JURASSIC PARK

Hi there.

in The modpack Technic Rexxit: Jurassic Pack (v:1.1.5) from the Technic launcher, when generating the world, the world should be from Biomes o' Plenty.

But in the server i can only find Vanilla biomes.

There is a tool ingame that let you find certain biomes. but the only biomes that i can find is Vanilla biomes.

I would like if i might something wrong and if anyone could check if the world generation for this modpack is allright

Sorry if my phrases dont make sence but english isnt my strong

i already did that and my friend is also trying but we only get vanilla worlds

I did saw but it said to install forge. doesnt that eliminate Technic Rexxit: Jurassic Pack from the server?