The post grid – No post found

Hi
I do need some help with the post grid.
I created a new grid that does not want to show.
everything is up to date and theme May pro
I already have some grid working that have been created 8 month ago
I tried to do a copy / paste of an old grid and it does show.
I looked at the parameters on The grid from the old grid and put the same.
So may be it is because of the ID of the page? I took the ID of the page when they show up when creating a page at the top of the screen.
Hoping what I am saying is clear
Thanks a lot for any help.

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