STP failure

Hello, I have a network with a 3011UiAS router and multiple wireless devices (SXT and Ubi mixed). When I checked the stp on my bridge, I saw something strange: the root-bridge-id doesn’t have the mac address.

 monitor bridge
                  state: enabled
    current-mac-address: E4:8D:8C:78:C4:B9
            root-bridge: yes
         root-bridge-id: 0x1000.00:00:00:00:00:00
         root-path-cost: 0
              root-port: none
             port-count: 10
  designated-port-count: 7
           fast-forward: no

Moreover, two ports are not transmitting data, unless I disable stp…
This is the result of the non-transmitting port. In winbox, on the status page, the learning is blinking on/off irregularly.

 interface: 07 Ny-AP
               status: in-bridge
          port-number: 10
                 role: designated-port
            edge-port: no
  edge-port-discovery: yes
  point-to-point-port: yes
         external-fdb: no
         sending-rstp: yes
             learning: no
           forwarding: no
     hw-offload-group: switch2

What could cause this issue? Thanks