I have had an UTM 425 for two years now and since the business became more critical I was able to buy a second one in order to create a HA configuration; so far so good but on the new arrival (the slave) after the initial setup (name, IP, password and license) I want to change the HA config mode from automatic to active/passive but, after I set it on "off" the configuration tab remains grey and I am not able to change any settings any more. Meanwhile a couple of times the factory reset tried without success...any idea?
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