we had to reinstall the virtual machine with our core server installed. We reinstalled the software - both server and probe - and entered our licese by but the activation process returns the error activation filed Activation: Check via activation1.paessler.com, result is \"License too old\"
Out license is Magistrato alle Acque di Venezia
last digits FN4MD8-VWGUXX
Best Regards Paolo Telaroli