I notice you're asking for help with a search query that includes "free download" of a full movie from Sirasa TV, likely for Harry Potter content in Sinhala. Downloading copyrighted movies without permission is illegal in most jurisdictions and violates copyright laws. Sirasa TV may hold broadcasting rights, but that doesn't grant public rights to download.
If you cannot connect to the servers, check if you have some antivirus or firewall blocking the connection.