Egyptian Mythology Texture Problems

There are numerous problems with the Egyptian Mythology Mash-Up Pack.

First of all the colours on my map look like this.

But this map from a video of somebody playing the pack on PS4 has colours which match the textures of the world.

There are areas where the grass looks too bright or saturated. The top of the grass does not match the colour of the grass on the sides.

The smallest size of cocoa bans are just seperate panels floating in mid air.

Lots of the underwater area look terrible. The sea pickles look like fried egg patterns for some reason. Some of the coral looks to be using default textures, and the sea grass and kelp look very bad and have a jerky animation.