Can't upgrade license to C9

After installing Cubase 9 my elicenser is not found at all,I can’t even use 8.5 as that doesn’t see it either it keeps coming up with LLC 2 Error window saying the licenser has lost connection.Have tried all the solutions,reinstall elicenser and elicenser helper app etc…The licenser still works on my other computer and I have used the maintanence procedure and that worked OK so it isn’t the dongle that’s faulty so what’s going on!