Does server/browser console logs reveal anything? - see Please read me before reporting a bug! for a broad/general idea about what’s useful in getting to the bottom of issues.
There is nothing in the logs which explains why the new questions are failing with this message “Your question took too long” for all the databases. Please advise.
I can now see the PostgresSQL in the Data dropdown, so it is number 2 of my post which I need advice.