When did you purchased it?
It usually takes few days since BSP team have to check the real success of the transaction. Once it's checked you'll receive the license key and link in your e-mail account (pay attention also to the spam section of your mail account)
If in next two days you'll not receive the needed information post a message here on the forum (I will be away for 10 days, but another moderator or admin will reply to you)
Or write using this form:
http://bsplayer.com/en/contact_us/
But I don't know if you can use it since it's for Pro users support :roll: (try and post here your results)
Beware that BSP team members doesn't work 24/7, but usually from Monday to Friday (7 UTC - 16 UTC)