What is happening here and how do I fix this

I am new to Blender here And I was checking out the Krystal model by Dogzeela and when I clicked on the viewport shading and started to move around, this happened. How do i fix this?

Welcome :tada:
…well… you bought some model… i guess it’s best to ask the author… if not someone here also bought this… :person_shrugging:

…this category is definitely also “not fitting” ( …yet ? ever ?)