I am writing this cause I've hit a dead end.
I've come across an issue which I can't resolve for the past few weeks. The whole thing is operational and all so I can't devote my time to tinker on production server, etc.
In the picture below, you will see that I can't connect to the other server and same thing is with that other server. They are connected to themselves, but I cannot establish a connection between them. iSCSI targets are connected(can provide a pic if necessary), but I would like to reconnect them but I am not sure how and where to begin with or what would be the issue so I quite don't know where to start.

Thanks in advance, and I remain at your full disposal if you have further questions.
Kind regards,
Mario