We are having this same issue, getting error message "Please Check your TerraFlex license" when attempting to log into TerraFlex. This is the first time encountering this problem after about a month of using it. Are you able to help us as well?
Thanks so much in advance,
I'd first check the TID you signing in to Terraflex with has an active Terraflex subscription
There are no service issues currently or recently so it's likely something specific
If you're not having any joy from the options about then feel free to direct message me and I can take this up with the Trimble Support Team