Haproxy not working across VLAN

Hey
i have a web server on vlan 10.10.2.21 and haproxy on 172.30.0.11
For some rason, when they are in diffrent VLANs, we cant reach the WEBSERVER from INTERNET and i get de message log:

2024-09-07T20:18:09.443760+00:00 haproxy-01 haproxy[28193]: 68.183.80.103:55572 [07/Sep/2024:20:18:09.442] https-in https-in/ -1/-1/-1/-1/0 400 0 - - PR-- 3/1/0/0/0 0/0 “”

It works fine when the HAPROXY and WEBSERVER are in the same VLAN and i can telnet both servers\vlans.

NOTE: just testing the port 80 for the moment for simplicity

Any idea?

HAPROXY CONFIG:
frontend http-in
mode http
bind :80
bind *:80
bind 0.0.0.0:80
acl host_d1 hdr(host) -i example.com

    use_backend be_http-nord if host_d1

backend be_http-nord
server 10.10.2.21 10.10.2.21:88