We’re currently running a trial with SonarCloud and GitHub integration. Everything works ok except the automatic user synchronisation. We have ~20 users in our GitHub organization, none of them is synchronized. There is only one admin user…
Are the users you expected to see in your SonarCloud organization, already logged to the SonarCloud at least once? Once they log in, you can re-enable the synchronization and they should be added to the organization.