Was this reboot due to Firefox or to Windows Fall Update ? Firefox 56.01 could have found they were incompatible and unloaded them in which case should look on the Extension site to see if compatible with Firefox 57 as all Legacy Extensions will be disabled on / or about Nov 14th release date. If it was Win 10 update it has a habit of uninstalling anything it does not like. And again should look for a updated version as some Extensions are not updating due to code changes in their new versions for 57. So could you check to see what caused the reboot in the Windows Event Viewer. Or check in Settings then Updates then View Installed Update History. By the way you are a little heavy on the Extensions. Please let us know if this solved your issue or if need further assistance.