Well, this latter seems a different scheme from the one you originally posted, but you are still not providing enough information.
For EACH device we need to understand to WHICH ethernet port it is connected on the RB4011.
AND whether the device is running a DHCP client (and thus there is a DHCP server on the Mikrotik or on the gateway) or a DHCP server and how exactly these devices are connected between them.
In the last scheme you posted, it seems like the three Twibi's are connected in "daisy chain" (which would be - to say the least - unusual), it is more likely that each of them is connected to a port on the RB4011.
And - still from that scheme - it seems like out of the three Twibi's two are running a DHCP client (and so they get a "right" address in the 10.1.1.0/24 range) and the Stuc 2 has instead a static address, or - viceversa - the Stuc 1 and Stuc 3 have a "right" static address and the Stuc 2 is running a DHCP client and it is getting an Ip address from a "rogue" DHCP server somewhere on the network.
If one of the two hypothesis above is correct there should be nothing to change on the RB4011 and on the gateway, only the settings on the Twibi Stuc 2.
You need to tell us which device(s) run a DHCP server and which ones run a DHCP client (if any) to be able to understand how IP addresses are assigned.
And, please provide an export of the current configuration of the RB4011, instructions here: