Update 9/1/20, 4:35 p.m.: The databases and chat are both working as expected! Hooray!
As OTS's email(s) informed all LSC users, the System Office is being impacted by power outages, which in turn impacted various services, including LoneStar.edu. This has including our Chat With a Librarian service (which is hosted on LoneStar.edu servers) as well as our research databases' ability to process through the proxy authentication (and therefore to let you in!).
Update 8/31/20: Chat is back but the databases are still down. We hope things will be repaired by 9/1 (apparently the loss of power damaged some equipment).