Issue logging in to WebAdmin

Is anyone else having a problem logging in to WebAdmin?  I did not log in to SFMOS v.16 for a couple of days, and when I tried today, I was able to access the sign-in screen, but nothing would happen after entering my credentials.  I have two XG v.16 firewalls connected to the SFM and I cannot log in to either one of those.  Rebooting the SFM allowed me to access WebAdmin on the SFM, but not the XG firewalls.  I am assuming, but have not confirmed yet, a reboot would also resolve the issue on those devices.