Hi,
I’ve encountered the “A plugin has prevented updates by disabling wp_version_check().” message too with version 1.2.1
In includes/class-health-check-auto-updates.php inside function test_wp_version_check_attached() the response of wp_remote_get() checking with arg ‘health-check-test-wp_version_check’ returns ‘ yes’ ( there’s some whitespace at the start of the response ) so it’s not identical to the left side of the comparison.
Hope this helps solve the issue.
Peter