I had the same issue, back in 2019.
HOD profile was not supported as per the WS Profile
However in recent Terminal Activities, version 2.01 onwards (if not mistaken)
We can opt for Direct connection to the Terminal Server using IP and Port 23 (Telnet)
This way, i do find it (and tested & deployed in production env), it is much stable and efficient.
Only drawback is that, if you need to use UI automation to click any buttons in IBM HOD application, then you need startup the application to do so.
I do recommend for alternative way to perform the button actions, if possible
either use IBM i-Series or etc