corona material dosnt showing in slate material

[kelwazoldk]

how can i solve it

[TomG]

I'd suggest using a different site to host images - or just upload directly to the forum in the case of single images, easiest and safest. The one you have chosen is frequently blocked by security tools due to common misuse to post malware (it's blocked for me :) )

[Jpjapers]

how can i solve it

It looks like you dont have corona set as your current renderer.
Open the render settings menu (F10) and pick corona as your active renderer. It should then display.

[romullus]

Not directly related to your question, but your material setup is wrong. Please refer to attached picture, to see how it supposed to be.

[kelwazoldk]

I think the roof looks like this because I didn't put the roof on yet
but what about the light reflect there there is 4

[Jpjapers]

There are two reflections and two points where the sun is hitting.
I would suggest running through some of the beginner tutorials on the Corona Youtube channel to understand how Corona works.

https://www.youtube.com/@ChaosCorona

Here is a series about interior visualisation.
https://www.youtube.com/playlist?list=PLt4UrWcQaAX83sxupfzMYbIH_bB33eCPA