Cannot connect to the labs



I’d like to start the eCPPT exam and I was trying before with a lab. I can’t connect to it. It keeps asking for my hera user and password. I’ve reset them several times and download new .opvn files every time but still the same. It said failed to negotiate cipher with server and failed to apply push options.
I’m running everything inside a parrot VM

Pleaase, could you help?