@mustywalji welcome to the community
Looking at the rules you have created I see no issues, what is telling you port 8090 is closed?
If you check the hubs event log found in >Advanced settings >Technical Log >Event Log > Select category FWRL
you can see if the rule is working, the target device does not need to be switched on for the rule to work
example log entry
08:02:28, 22 Oct. FWL Port Forward Server(192.168.10.201) TCP 8090 accepted a new connection from 198.199.98.246
Can you connect to the device locally on port 8090?
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