What would cause TG582n to not connect with time server(s) (SOLVED)

[#1]

As per title
What would cause TG582n to not connect with time server(s) and default back to 01/01/2000
I have tried 3 different servers by both the routers GUI and telnet and they do not connect
Telnet example:
sntp add name=2.uk.pool.ntp.org
saveall
all 3 show in the sntp list as unable to connect
List of the 3 time servers tried to date

• ntp.plus.net


• ntp2b.mcc.ac.uk


• 2.uk.pool.uk.org
  

P.S I do have a support ticket for a new router due to errors causing drop in speed,
so just more curious and understanding as to what could cause the above issue
I have also set the Dns servers by telnet to open Dns and makes no difference

[#2]

See: https://community.plus.net/forum/index.php/topic,113730.0.html
If the Plusnet Broadband Firewall set to "high", then ntp won't work.

[#3]

I can not see a Firewall (high) setting, and mine is currently set to basic
Here are the router stats

{admin}=>xdsl info expand=enabled
Physical Layer Statistics:
  Modem state:                                   up
  Up time (Days hh:mm:ss):                       0 days, 2:10:35
  xDSL Standard:                                 ITU-T G.992.5
  xDSL Annex:                                    Annex A
  Channel Mode:                                  Interleaved
  Number of reset:                               0
  Chipset Vendor info (G.994.1):                 Local          Remote
    Country code:                                B500           B500
    ID:                                          BDCM           TSTC
    Specific:                                    0000           0510
  System Vendor info (showtime):                 Local          Remote
    Country code:                                0F00           0000
    ID:                                          TMMB           ----
    Specific:                                    3C61           0000
  Bearers generic info                           DS             US
    Payload rate [Kbps]:                         8371           448
    Attenuation [dB]:                            47.5           27.2
    Margins [dB]:                                6.0            18.1
    Output power [dBm]:                          20.4           11.8
    Number of bearers:                           1
    Bearer 0                                     DS             US
      INP [DMT symbols]:                         0.00           0.00
      Delay [ms]:                                0.24           1.00
      Depth []:                                  1              0.00
      R:                                         0              0
G.997.1 Statistics (Current):
  Failures:
    Line failures                                Near end
      Loss of signal (LOS):                      0
      Loss of frame (LOF):                       0
      Loss of power (LPR):                       0
  Performance monitoring:
    Line PM:                                     Near end
      Error second (ES):                         823
    Channel PM:                                  Near end       Far end
      Bearer 0:
        Code Violation (CV):                     3425           4
        FEC:                                     0              0
    ATM data path PM:                            Near end       Far end
      Bearer 0:
        HEC violation count (HEC):               855            N/A
G.997.1 Statistics (last 15 minutes):
  Failures:
    Line failures                                Near end
      Loss of signal (LOS):                      0
      Loss of frame (LOF):                       0
      Loss of power (LPR):                       0
  Performance monitoring:
    Line PM:                                     Near end
      Error second (ES):                         102
    Channel PM:                                  Near end       Far end
      Bearer 0:
        Code Violation (CV):                     3425           4
        FEC:                                     0              0
    ATM data path PM:                            Near end       Far end
      Bearer 0:
        HEC violation count (HEC):               855            N/A
G.997.1 Statistics (last 24 hours):
  Failures:
    Line failures                                Near end
      Loss of signal (LOS):                      0
      Loss of frame (LOF):                       0
      Loss of power (LPR):                       0
  Performance monitoring:
    Line PM:                                     Near end
      Error second (ES):                         823
    Channel PM:                                  Near end       Far end
      Bearer 0:
        Code Violation (CV):                     3425           4
        FEC:                                     0              0
    ATM data path PM:                            Near end       Far end
      Bearer 0:
        HEC violation count (HEC):               855            N/A
{admin}=>

[#4]

I think you'll find npr ejs is referring to the web based firewall.
https://portal.plus.net/index_nlp.html
Don't forget to disconnect/reconnect in your router for settings to take effect!
oops, sorry ejs.

[#5]

There isn't such a thing as Basic - have you looked here https://portal.plus.net/my.html?action=firewall

[#6]

Thanks ejs
I got mixed up between the router Firewall and the web based firewall,
With thanks to 30FTTC06 for setting that straight  
Thanks Oldjim
Sorry, my bad   ,  for causing any confusion, I did mean Standard in the router GUI and not basic as per earlier screenshot
However that said, the Firewall was set to high, now amended and updated via the web Firewall, will disconnect and reconnect after I send this post  

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[Edit]
Thank you guys it has worked a charm
Issue with the time is now SOLVED  albeit with the exception of lower security protocols