At https://developer.confluent.io/tutorials/credit-card-activity/confluent.html
auto.offset.reset = Latest which is the default, the query will be always loading > 15m

I tried to execute below:
/*
SET 'auto.offset.reset' = 'earliest';
select * from FD_POSSIBLE_STOLEN_CARD EMIT CHANGES LIMIT 1;
*/
It says "Unable to run queries and commands simultaneously."
Suggest to ensure auto.offset.reset = Earliest is configured in UI to make sure someone new has smooth experience.