HAProxy before Marathon-lb

Hi, I am having troubles with this setup,

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Traffic forwarded from haproxy01 is being sent to marathon-lb with the following configuration:

global
  daemon
  log /dev/log local0
  log /dev/log local1 notice
  spread-checks 5
  max-spread-checks 15000
  maxconn 50000
  tune.ssl.default-dh-param 2048
  ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:!aNULL:!MD5:!DSS
  ssl-default-bind-options no-sslv3 no-tlsv10 no-tls-tickets
  ssl-default-server-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:!aNULL:!MD5:!DSS
  ssl-default-server-options no-sslv3 no-tlsv10 no-tls-tickets
  stats socket /var/run/haproxy/socket
  server-state-file global
  server-state-base /var/state/haproxy/
  lua-load /marathon-lb/getpids.lua
  lua-load /marathon-lb/getconfig.lua
  lua-load /marathon-lb/getmaps.lua
  lua-load /marathon-lb/signalmlb.lua
defaults
  load-server-state-from-file global
  log               global
  retries                   3
  backlog               10000
  maxconn               10000
  timeout connect          3s
  timeout client          30s
  timeout server          30s
  timeout tunnel        3600s
  timeout http-keep-alive  1s
  timeout http-request    15s
  timeout queue           30s
  timeout tarpit          60s
  option            dontlognull
  option            http-server-close
  option            redispatch
listen stats
  bind 0.0.0.0:9090
  balance
  mode http
  stats enable
  monitor-uri /_haproxy_health_check
  acl getpid path /_haproxy_getpids
  http-request use-service lua.getpids if getpid
  acl getvhostmap path /_haproxy_getvhostmap
  http-request use-service lua.getvhostmap if getvhostmap
  acl getappmap path /_haproxy_getappmap
  http-request use-service lua.getappmap if getappmap
  acl getconfig path /_haproxy_getconfig
  http-request use-service lua.getconfig if getconfig

  acl signalmlbhup path /_mlb_signal/hup
  http-request use-service lua.signalmlbhup if signalmlbhup
  acl signalmlbusr1 path /_mlb_signal/usr1
  http-request use-service lua.signalmlbusr1 if signalmlbusr1

frontend marathon_http_in
  bind *:80
  mode http
  acl host_status_embl_de_itsops_status-page_cachet hdr(host) -i status.embl.de
  redirect scheme https code 301 if !{ ssl_fc } host_status_embl_de_itsops_status-page_cachet

frontend marathon_http_appid_in
  bind *:9091
  mode http
  use_backend %[req.hdr(x-marathon-app-id),lower,map(/marathon-lb/app2backend.map)]

frontend marathon_https_in
  bind *:443 ssl crt /etc/ssl/cert.pem
  mode http
  use_backend %[ssl_fc_sni,lower,map(/marathon-lb/domain2backend.map)]

frontend itsops_status-page_cachet_8000
  bind *:8000
  mode http
  use_backend itsops_status-page_cachet_8000

backend itsops_status-page_cachet_8000
  balance roundrobin
  mode http
  option forwardfor
  http-request set-header X-Forwarded-Port %[dst_port]
  http-request add-header X-Forwarded-Proto https if { ssl_fc }
  server 10_11_6_32_9_0_1_130_8000 9.0.1.130:8000

Traffic seems to be only getting to *443 frontend, bot not being passed to the app frontend.