double images and not from the group

hallo there,
I’m testing with your beautifull plugin, but on my testsite rjtb.nl i want 5 random images. I use a textwidget. Sometimes it works, but sometimes not and it places all the images, even the ones that don’s belong to the wanted group.
Can you see if i’m doing something wrong.
The images are jpeg and gif, all kind of sizes.
Thanks, Regards,

RJTB, Holland

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