If you are unable to use the technology test or video chat features, then it might be an issue with your or your partner teacher's network or firewall. There are a variety of possible errors that could appear in this situation but common error messages will indicate that you "cannot connect" or that a connection "timed out".
Many schools block connections to unapproved sites or whitelist a selection of permitted sites. If this is the case in your school then you need to request that Empatico is allowed or added to this whitelist.
Tell the person or organization responsible for your network that you need access to:
Keywords: network issues, can’t open the site, site isn’t working