Web request callback raised an exception (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.ServerArmour.IsBadIp (Oxide.Plugins.ServerArmour+ISAPlayer isaPlayer) [0x00023] in <10c75744a2ed4c55b04437ec48caec6b>:0 
  at Oxide.Plugins.ServerArmour+<_webCheckPlayer>c__AnonStorey1.<>m__0 (System.Int32 code, System.String response) [0x00a4b] in <10c75744a2ed4c55b04437ec48caec6b>:0 
  at Oxide.Core.Libraries.WebRequests+WebRequest.<OnComplete>b__42_0 () [0x00034] in <157a94ee66ab4a7991faecd1eb84be3b>:0 

I guess the good old friend error is still there after an actual update. Seems like they are still in the process of updating the API after moving to a new server. 

Web request callback raised an exception (NullReferenceException: Object reference not set to an instance of an object)

at Oxide.Plugins.ServerArmour.IsBadIp (Oxide.Plugins.ServerArmour+ISAPlayer isaPlayer) [0x00023] in <24da071b725f4fa9a4ac99204e819c2a>:0

at Oxide.Plugins.ServerArmour+<_webCheckPlayer>c__AnonStorey1.<>m__0 (System.Int32 code, System.String response) [0x00a4b] in <24da071b725f4fa9a4ac99204e819c2a>:0

at Oxide.Core.Libraries.WebRequests+WebRequest.<OnComplete>b__42_0 () [0x00034] in <157a94ee66ab4a7991faecd1eb84be3b>:0

please try version 0.8.0 https://umod.org/plugins/ServerArmour.cs?version=0.8.0&branch=develop

Merged post

Will close this, as it's a duplicate of https://umod.org/community/server-armour/48620-isbadip-error-serverarmor