Cannot create new wireguard interface (not running)

Hello,
I have run several wireguard and today I wanted to create a new connection, so I created the wireguard interface as usual but found the interface is not up. I tried disable it and then enable it but no luck. It is CCR2116 running v7.15.2

What caused this issue ? Any one ever had same problem before ?

[brg3466@CCR2116] > /interface/wireguard/add name=WG71 listen-port=55571

[brg3466@CCR2116] > /interface/wireguard/print
Flags: X - disabled; R - running 

 5  R ;;; to_1502
      name="WG21" mtu=1420 listen-port=55521 private-key="xxx" public-key="yyy" 

 6    name="WG71" mtu=1420 listen-port=55571 private-key="xxx" public-key="yyy"

Not the correct info.

terminal
/export file=anynameyouwish
Move file to PC
Edit serial, public wanip, public keys, …
Post back between [__code] quotes.

@holvoetn, What info do you need to diagnose ?

What I tried to explain is ;

  1. I created the wireguard interface with below command:
    /interface/wireguard/add name=WG71 listen-port=55571

  2. And if you check the WG71 status, you will see there is no “R” to WG71, which means it is not running.

[brg3466@CCR2116] > /interface/wireguard/print where name=WG71
Flags: X - disabled; R - running
0 name=“WG71” mtu=1420 listen-port=55571
private-key=“xxx”
public-key=“yyy”

if you dont want help keep ignoring the request, if you know where the problem is you dont need our help.