Recent Posts Widget With Thumbnails widget problem

https://prnt.sc/r4n2zu
here is the screen, if you go to this link:
https://staging3.somethingturquoise.com/?s=Super+Cute%2C+Personalized+Maternity+Tank+Tops

and click for example on DIY Projects YOU WILL SEE THIS SCREEN.

Yes unfortunately our server goes down sometimes and maybe you have tried at that time, please try again

RPWWT widget is put on the menu whith the help of Max mega menu plugin.
picture 1 – https://prnt.sc/r6qhxk
in this picture when hovering on each item of the menu, mega menu button appears, then when you click on it you can see the following view(picture 2)
picture 2 – https://prnt.sc/r6qjvj
even if we put RPWWT widget in the seacrh template, Number of posts to show: input value is not correct, it shows all the post of chosen category.