Thanks for your help…
Unfortunately the DHCP Relay and manual IP in the devices did not work.
I give up…
It’s absurd that it cannot be used as a pseudobridge station of a MikroTik router
If I remove wifi1 from bridge1 and add it as a dhcp client, wifi1 gets an IP from the router, why?
It doesn’t seem like a problem with wifi compatibility…
EDIT: I found where I was wrong!
I changed the bridge protocol from rstp (default) to none and now it works 
