Hi Arthur @ar2r, sorry for the delay. I checked with the support staff. It might be that there is an internal issue with the tracker. However, as we cannot gather diagnostics directly (Due to lack of connection) I wonder if there is perhaps some Antivirus software or Firewall software running that may be blocking the correct connection. Could you kindly check this and disable any such software? This may also be a trivial suggestion, but are you certain to be installing and using the software with an administrator level account?