Have never used quickset, but I suspect for this kind of custom config its not usable. You'd would need to configure manually, either from scratch or modifying an existing quickset config (no running quickset again).
The system should not allow you to have no master ports. If plugged into the correct port, you should always be able to connect to the MAC addr via WinBox, click [...] at he end of Connect To:
EDIT: The manual config should be really simple ...
Plug into port 1 and connect using the MAC addr from Winbox
Reset the RB to default empty config
Reconnect and run the following from a terminal window (in Winbox);
/interface ethernet
set 0 master-port=none
set 1 master-port=ether1
set 2 master-port=ether1
set 3 master-port=ether1
set 4 master-port=ether1
/interface pppoe-client
add add-default-route=yes allow=pap,chap disabled=no interface=ether1 max-mru=1492 max-mtu=1492 name=ADSL password=PPPPP use-peer-dns=yes user=UUUUU
/ip pool
add name=dhcp_pool1 ranges=192.168.1.100-192.168.1.200
/ip dhcp-server
add address-pool=dhcp_pool1 disabled=no interface=ether1 name=dhcp1
/ip address
add address=192.168.1.1/24 comment="LAN" interface=ether1
/ip dhcp-server network
add address=192.168.1.0/24 dns-server=192.168.1.1 gateway=192.168.1.1
/ip dns
set allow-remote-requests=yes max-udp-packet-size=512
/ip firewall nat
add action=masquerade chain=srcnat out-interface=ADSL
/system clock
set time-zone-name=Africa/Johannesburg
/system identity
set name="My RB"
/system ntp client
set enabled=yes mode=unicast primary-ntp=196.25.1.1
That should be it.