Hi,
I also opened a trial account and gets an error :
"Controller communication failed. Details: Unable to connect to the remote server
Please use certmgr.msc to add Controller Certification Authority certificate to
"Trusted Root Certification Authorities" at computer account (system) level."
I also get it when I tried to turn off SSL in the controller side, and change the port to 80.
Till now I couldn't find any simple documentation regarding where to import the AppDynamics certificate from.
Pretty dissappointing onboarding experience.