Register, logout, and lost password links disappeared

Please help! Sometime during the past three days (since April 30th), the Register, Lost Password, and Logout links have disappeared from the Sidebar Login. I have version 1.5.2. Anyone Can Register is enabled, and I have tried unchecking, saving, and then checking (and saving again) the Lost Password Link and Register Link in the widget, but to no avail. I also tried unchecking and checking Anyone Can Register, but that didn’t work either. We have people registering steadily and need to restore the registration function as soon as possible, so your help will be mightily appreciated!!!
The website: https://www.mensaww.org

Thanks!

https://www.ads-software.com/extend/plugins/sidebar-login/