If you are a licensed customer please open a case with our support teams through the support portal. The deployment process for Key Trustee is fairly straight forward but you do have to perform certain steps in the commandline during deployment that are outlined in the wizard.
Also please ensure that communication between both systems which will host Key Trustee is unobstructed during deployment. If these host are in AWS please review your security controls, if these are stand alone systems in an on-prem environment please make sure that there are no firewalls or proxies which might interfer with communication. Part of the setup process include data replication between these host as well the setup of synchronous replication.
There are ways to recover from the state you are presently in however they can be complex. It may be easier for you to remove the roles, clean up the host, and try again after ensuring that there are no firewalls, or other controls blocking or manipulating traffic between the host.