how to fix error Save server settings bad server settings error message

[bijism]

Hello friends
We have a major problem with the WordPress plugin
Error setting up plugin on server:
Save server settings bad server settings error message
Sessions are created through mconf-api, but we have a problem with the WordPress plugin.
I put the bbb-check and bbb-status output there
Is displayed, do you have a solution to this problem?

root@userlinux:# bbb-conf --status
nginx —————————————————► [✔ - active]
freeswitch ————————————► [✔ - active]
redis-server ——————————► [✔ - active]
bbb-apps-akka —————————► [✔ - active]
bbb-fsesl-akka ————————► [✔ - active]
tomcat8 ———————————————► [✔ - active]
mongod ————————————————► [✔ - active]
bbb-html5 —————————————► [✔ - active]
bbb-webrtc-sfu ————————► [✔ - active]
kurento-media-server ——► [✔ - active]
bbb-html5-backend@1 ———► [✔ - active]
bbb-html5-backend@2 ———► [✔ - active]
bbb-html5-frontend@1 ——► [✔ - active]
bbb-html5-frontend@2 ——► [✔ - active]
etherpad ——————————————► [✔ - active]
bbb-web ———————————————► [✔ - active]
root@userlinux:# bbb-conf --check

BigBlueButton Server 2.3.15 (2482)
Kernel version: 4.15.0-162-generic
Distribution: Ubuntu 18.04.6 LTS (64-bit)
Memory: 16424 MB
CPU cores: 10

/etc/bigbluebutton/bbb-web.properties (override for bbb-web)
/usr/share/bbb-web/WEB-INF/classes/bigbluebutton.properties (bbb-web)
bigbluebutton.web.serverURL: https://subdomain.domain.com
defaultGuestPolicy: ALWAYS_ACCEPT
svgImagesRequired: true

/etc/nginx/sites-available/bigbluebutton (nginx)
server_name: subdomain.domain.com
port: 80, [::]:80
port: 443 ssl

/opt/freeswitch/etc/freeswitch/vars.xml (FreeSWITCH)
local_ip_v4: 172.X.X.44
external_rtp_ip: X.X.X.88
external_sip_ip: X.X.X.88

/opt/freeswitch/etc/freeswitch/sip_profiles/external.xml (FreeSWITCH)
ext-rtp-ip: $${external_rtp_ip}
ext-sip-ip: $${external_sip_ip}
ws-binding: X.X.X.88:5066
wss-binding: X.X.X.88:7443

/usr/local/bigbluebutton/core/scripts/bigbluebutton.yml (record and playback)
playback_host: subdomain.domain.com
playback_protocol: https
ffmpeg: 4.2.4-1ubuntu0.1bbb2~18.04

/etc/bigbluebutton/nginx/sip.nginx (sip.nginx)
proxy_pass: X.X.X.88
protocol: https

/usr/local/bigbluebutton/bbb-webrtc-sfu/config/default.yml (Kurento SFU)
kurento.ip: X.X.X.88
kurento.url: ws://127.0.0.1:8888/kurento
kurento.sip_ip: X.X.X.88
localIpAddress: 172.X.X.44
recordScreenSharing: true
recordWebcams: true
codec_video_main: VP8
codec_video_content: VP8

/usr/share/meteor/bundle/programs/server/assets/app/config/settings.yml (HTML5 client)
/etc/bigbluebutton/bbb-html5.yml (HTML5 client config override)
build: 1854
kurentoUrl: wss://subdomain.domain.com/bbb-webrtc-sfu
enableListenOnly: true
sipjsHackViaWs: true

/usr/share/bbb-web/WEB-INF/classes/spring/turn-stun-servers.xml (STUN Server)
stun: stun.l.1.google.com

/etc/kurento/modules/kurento/WebRtcEndpoint.conf.ini (STUN Server)
stun: 173.X.X.127:19302

Potential problems described below

Warning: Failed to verify STUN server at stun.l.1.google.com 3478 with command

stunclient --mode full --localport 30000 stun.l.1.google.com 3478

Warning: Failed to verify STUN server at 173.X.X.127:19302 with command

stunclient --mode full --localport 30000 173.X.X.127 19302