Big thanks for a prompt reply
I have added a snippet from the OXauth log.
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
2018-12-20 10:21:50,160 INFO [qtp804611486-18] [org.xdi.oxauth.auth.Authenticator] (Authenticator.java:301) - Authentication reset to step : '2'
2018-12-20 10:21:50,286 ERROR [qtp804611486-16] [org.xdi.oxauth.service.net.HttpService] (HttpService.java:205) - Failed to execute get request
java.net.UnknownHostException: ip-api.com: Temporary failure in name resolution
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[?:1.8.0_181]
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) ~[?:1.8.0_181]
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) ~[?:1.8.0_181]
at java.net.InetAddress.getAllByName0(InetAddress.java:1276) ~[?:1.8.0_181]
at java.net.InetAddress.getAllByName(InetAddress.java:1192) ~[?:1.8.0_181]
at java.net.InetAddress.getAllByName(InetAddress.java:1126) ~[?:1.8.0_181]
at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:263) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:162) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:326) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108) ~[httpclient-4.5.3.jar:4.5.3]
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.3.jar:4.5.3]
at org.xdi.oxauth.service.net.HttpService.executeGet(HttpService.java:201) [classes/:?]
at org.xdi.oxauth.service.net.HttpService$Proxy$_$$_WeldClientProxy.executeGet(Unknown Source) [classes/:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_181]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_181]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_181]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_181]