"=honestly i don know how to check this"
Sniff on lan where your zimba is in pfsense on diag, packet capture. Then try to talk to your zimba from some box on lan 2.. Do you see the SYN go out, do you see the syn,ack come back or do you just see a bunch of syn and retrans?
This is really basic network troubleshooting 101..
if you do not see any syn leave pfsense to your zimba box. Does pfsense even see the syn.. Packet capture on lan 2 interface this time - repeat the test. Does pfsense see the syn?? If not then your device on lan 2 is not sending to pfsense as its gateway, etc..
If you see the syn come into lan 2 but not go out lan 1 - then pfsense either is not allowing the connection or is sending it elsewhere - like out your wan for example because you have maybe a gateway set on your lan 2 rules?
Post up your rules and we can look.. Can lan 2 talk to other devices on lan 1? If so then its a zimba thing. Can lan 2 device ping the lan 1 IP of pfsense?