Roof feels week - and solar panel screws didn't grab well

Thank you so much for the feedback and ideas. I ended up taking out all of screws, and slightly making the hole bigger, and pushing in a toggle wing screw. Every one took and held firmly. Now I have piece of mind that the panels are less likely to go sailing into the wind as I drive down the road. I also put down a bed of dicor around each one, and into the hole. Hopefully all is well now. Thanks again to the forum. Its been great getting the expert advice I get here.

Thank you!!