[UNSOLVED] How to use Flooded Grounds asset in URP?

When I import the asset, everything in the scene appears pink. Even when I use the Render Pipeline Converter present in Unity 2021.2.6f1, not all of the materials are converted. Some of them are, like some of the buildings, but the rest remain pink. Please Help!

Same problem. I cannot upgrade all materials.
Help please.

TT

Bro, same issue here! Has anyone fixed it yet?