The issue was resolved following the steps said by @viragomann . The issue was indeed that the rules regarding the HAProxy on the firewall were on the WANs group. We changed them individually on the WAN1 and WAN2 firewall rules and it worked. Thanks.

@kom thanks, na i have to test other options, again thanks for your time and help!

@jonathanlee Screen Shot 2022-07-04 at 2.14.17 PM.png

I have never had issues like this before. Has something changed?

it is clear now, thank you both for the replies