Hello Andrey,
Yesterday I purchased Sibwing's excellent Bird Dog. I received two email messages from Sibwings, the Purchase Receipt email and also the "Activation Details" email. I was then successful in getting the Bird Dog working in FSX.
Then I decided to purchase Sibwing's Pitts Special. I received the Purchase-Receipt email, but I never received the Activation Details email. I have tried to send an email message to Sibwings, but I keep getting an error message. So I tried to leave a message at your website forum, but I must first register on the forum. When I try to register, I am asked to answer the question about what is Sibwing's latest product (in order to eliminate automatic spammers). When I wrote "Pitts Special" I got the response that this is incorrect. (What's the correct answer?). So, I can't register or leave a forum message.
Would you please send an email message to me with the Activation Details (and the required "unique link"). According to my Purchase Receipt, this is order #4883835429.