Get Tivoli BigFix working.Some Details:
Is IBM Tivoli BigFix running? It is listed as the "BES Service" in the Services.msc control panel. The FHC Services Portal requires that Tivoli is working. There is a daily task that gets ran via Tivoli that updates specific code on the system, then upon reboot, the computer re-authenticates itself with the FHC Services Portal's administration server. That authentication lasts for 60 days, so your systems have been broken for that much time.
If the BES Service is running, you may launch the "View Log" tool (Start menu - Programs - FHC Support Tools folder) to see if there are any obvious errors with the Tivoli BigFix client's ability to communicate with its servers. If there is a problem, in the log file you will see reoccurring communication failures every 5 or 6 lines. If this is the case, you should reinstall Tivoli. (There is no need to uninstall. Simply reinstall over the top.) You can download the installation package from https://familysearch.org/remote/centers.html
If you are using Deep Freeze on your systems in your center, then you need to make sure that you have implemented the Deep Freeze client configuration correctly by utilizing the recommended batch file that is included with the Deep Freeze package download.
If Tivoli is working, then there is a need to do more advanced troubleshooting, which at that point in time I recommend getting in touch with the support team at FamilySearch.