SmartEvent upgrade to R81.10 is supported, perhaps they have an old appliance for SmartEvent?
IDK about the JHF though, I don't think there should a problem either, perhaps something was problematic for a specific take. Can you share the compatibility page you checked?
Either way, AFAIK SmartEvent R80.40 is not supported with R81.10 MGMT because since R81 the SOLR process the logging use has been upgraded and they're not compatible. I suggest looking into the compatibility issue and upgrade the SmartEvent to at least R81.
Kind regards, Amir Senn