Online Activation fails when using a proxy (4233488)

When trying to activate Content Matrix using Online Activation option it fails with error:

Error: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

Stack:    at Metalogix.Licensing.LicenseServer.Server.ExecuteMethod(String sMethodName, Object[] parameters)

   at Metalogix.Licensing.LicenseServer.Server.UpdateLicense(LicenseInfoRequest info)

   at Metalogix.Licensing.Common.MLLicenseProviderCommon.SynchronizeLicense(String licenseKey, Boolean validateAgainstCurrentLicense, Boolean bAcceptExceededLicense, Boolean throwException)

   at Metalogix.Licensing.Common.MLLicenseProviderCommon.UpdateLicenseKey(String key, Boolean isOldStyleLicense)

   at Metalogix.UI.WinForms.Licensing.Common.LicenseNewKeyWizard.ActivateLicenseOnline()

Type: System.Net.WebException

HResult:-2146233079

Inner Exception Error: The remote certificate is invalid according to the validation procedure.

Stack:    at System.Net.Security.SslState.StartSendAuthResetSignal(ProtocolToken message, AsyncProtocolRequest asyncRequest, Exception exception)

   at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)

• Our development team is aware of this issue and is working towards a solution in a future release of Content Matrix.
• As a temporary workaround please use Offline Activation.