Performance Information - advanced tools question

[D.Metal]

Hey guys, I have a question about the "Advanced Tools" which are found via clicking through: Control Panel > Performance Information and Tools > Advanced Tools.

At the top of the screen I've managed to remove the listed "Performance Issues" I had - unfortunately I did this by accidentally removing them from that list as opposed to actually sorting out the issues it had listed.

Obviously its rather useful to have those issues listed there. Is there anyway to bring those notifications back after removing them as the admin? How would I go about that?

I've put a picture below circling the area I'm talking about.

Thanks for reading.

-Dave