I am trying to register online with Aquagest to receive my future bills in this way but cannot register for some reason - I keep getting the following error. I have tried several times am sure I have input details correctly as found on me bill, tried upper/lower case in nif, with/without '.' in contract number, with/without last bill amount, ensured I used a comma and not a '.' in the amount, tried through the other language screens as well but always with the same result. Anybody got any ideas please?

Server Error in '/AquagestLevante/WebAutenticaNET' Application.

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System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.NullReferenceException: Object reference not set to an instance of an object. at ofvirtual.PasoPolizas.EsEmpresa(String testigo) --- End of inner exception stack trace ---

[SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at ofvirtual.PasoPolizas.EsEmpresa(String testigo)
   --- End of inner exception stack trace ---]
   System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +1495
   System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +218
   WebAutenticaNET.localhost1.PasoPolizas.EsEmpresa(String testigo) +48
   WebAutenticaNET.WebFrmFormPersInfo.Page_Load(Object sender, EventArgs e) +225
   System.Web.UI.Control.OnLoad(EventArgs e) +67
   System.Web.UI.Control.LoadRecursive() +35
   System.Web.UI.Page.ProcessRequestMain() +750

Seems to have sorted itself now - I just logged out completely and went back in and it worked.