Mlat problem next to SBCF

Hi everyone, i have problem with mlat that appear offline in your base. I have change dns and other configurations but my datas mlat cannot range your server, with route high latency and handshake no complete.
Many another receiver next to me, in SBCF, cannot range your servers mlat. Did you can resolv this?
att Ramon

Adding to the information, I’ve already done traceroute, changed DNS, and tried other possibilities on the Raspberry Pi, but the latency and handshake are not completing. I have another workstation with the same situation, and another that experiences the same problem and then normalizes, but the problem returns and remains unstable.