I tried, the hosted free version and two separate Bitnami installs on Gcloud.
I connected to a remote DB with no apparent error, but I cannot get it to work, with all instances.
The same happens when I try to create a table, and when I try to create a table on a local DB.
Update: I was able to connect from the Gcloud install, by fixing a firewall issue on the DB side.
But, the same fix did not help when using the hosted (free trial) instance.
I think that the IP address provided for this instance is incorrect.