Many Thanks @redfive. First I solved the problem with your solution, then I made the firmware upgrade, so with the firmw v3.200 for the VTH1510 now the device accepts more than 8 characters.
Do you know if there is the v3.200 also for the VTO2000A?
Francesco
Hello, I'm Francesco. I'm in the same situation, someone knows how to fix the password lenght issue? :(. Yesterday I tried to connect a IPC HFW1320S to my VTO and VTH but only 6 characters are allowed, but the IPC requires at minimum 8 characters..