A site of ours shows limited access. Some members got impacted and couldn't edit. My question is how to reset so the limited access goes away? Question two, how did this happen? We do not want this recur in the future.
Below is the first screen:

After I click the link "show users", I got the next screen which has limited access. I am the owner and admin of the site. but I can do nothing about it:

Thanks for help!

