Session Replay is not available for the user to watch if the browser does not trust the certificate.
I have a certificate issue which i cannot resolve at the time, and so i am unable to watch session replay and am getting the "you connection is not fully secured" message.
Can anyone recommend any way around it??
You should fix your certificates first. Not sure if you have issues with your browser not trusting the certificates on the application server or Dynatrace server, but you should import appropriate CA certificates into trust store of your browser and access those servers by hostnames these certs are valid for.
In general (does not apply to Dynatrace only) - don't ignore certificate issues, solve them.