Shared Database Resolve 15

Hello,
I was able to create a shared database, and add a second system to the share. I used the activation key generated from the machine hosting the Project Server to add the share to the second machine, as per the manual. However, I cannot seem to add a third machine to the shared project.
I have disabled firewalls on the machines, they're on the same network, on the same version (15.0.1.003) and all using PostgreSQL 9.5. I left the username and password as default since changing it seemed to not work.
I can still create a new shared database from the host machine, and use the key on the second machine to connect the shared database.
The main error message I receive is " Failed to connect to the database. Please check log file for more details" I'm not sure which specific log file to review.
Any tips on what to look for next?
Windows 10 pro
Resolve 15.0.1.003
I was able to create a shared database, and add a second system to the share. I used the activation key generated from the machine hosting the Project Server to add the share to the second machine, as per the manual. However, I cannot seem to add a third machine to the shared project.
I have disabled firewalls on the machines, they're on the same network, on the same version (15.0.1.003) and all using PostgreSQL 9.5. I left the username and password as default since changing it seemed to not work.
I can still create a new shared database from the host machine, and use the key on the second machine to connect the shared database.
The main error message I receive is " Failed to connect to the database. Please check log file for more details" I'm not sure which specific log file to review.
Any tips on what to look for next?
Windows 10 pro
Resolve 15.0.1.003