SoundCloud has still not been launched in every country. Therefor, it is possible that, even if you configured your release to be available worldwide, it's is not shown in some territories. This happens because releases distributed to countries where SoundCloud has not yet being launched cannot be played and are shown as "preview".
For now, SoundCloud only allows the monetisation of releases distributed through aggregators. This means that, if you reside in a country where the channel is still not active, you may still upload your tracks manually and they will be able to be reproduced, but they won't be able to be monetised.
SoundCloud is available in the following countries: AS, AT, AU, BE, CA, CH, DE, DK, ES, FI, FR, GB, GG, GP, GU, IE, IM, IT, JE, MP, MQ, NL, NO, NZ, PR, PT, RE, SE, US, VI.