My earphones/microphone/headphones are connected but it is still throwing an error.

This error can come if your Google Chrome version is not updated. Here is the link that explains how to update Google Chrome version - https://support.google.com/chrome/answer/95414?co=GENIE.Platform%3DDesktop&hl=en Please update your Google Chrome to fix this problem. Feel free to write us at support@callhippo.com if the problem still persists.