Best answer by Mathis
Sorry about the troubles with this. We've received reports about this by a number of users over the Easter weekend. Unfortunately, the trust & safety systems constantly require readjustment due to the large amount of spam & fake activity we're seeing on SoundCloud, and it looks like a recent change caused for a number of users to get a block in error. We've reached out to our engineers about this and they've investigated the issue. You should be all set again now.
Thank you for hanging in there & all the best