Jackluv wrote:
... with the UPS Module deactivated it crashed two times overnight.
I have not installed any plugins since the upgrade from 4.5 to 4.7. Only the main theme with their plugins that we upgraded at the same time...

Yes, it's not likely a problem with the UPS plugin.  Just be sure to unselect "Tracing" in the UPS plugin configuration page.
Please clarify "crashed".
In the System > Log, do you see frequent "Application started"?
What errors are in the System > Log just before?