Thank you. I disabled the IP->Firewall rule #4
In fact I found it out some days after my post but forgot to write it here. This rule shouldn't be enable by default by mikrotik in my opinion

Hello, I have a newbie question. I own a mikrotik hap ac2. When I use it for the very first time, I'm able to connect on the web interface by entering http://192.168.88.1 in my browser At this point I only change some settings on the quick setup page. I put the router into the bridge mode, enter the...

Hello, I've received my Mikrotik HaP Ac2 some days ago and I'm lost in the settings. Previously my network was like this : - one "Livebox" (Orange ISP router) with FFTH connection, wifi out from the livebox and 4 ethernet devices plugged in it - one simple TP-Link Router plugged in the Liv...