Typed in example connection string that was in the grayed-out field text

"mongodb+srv://felicia:mypass@cluster0-jtpxd.ongodb.net/admin"

This cluster doesn't exist.

It is still hanging after 5 minutes.

Note: This was the 1.21.0-beta version, but the option for this tag in Jira doesn't currently exist in the Jira field, "Affects Version/s".