Don’t panic, @Ivan! 
Everything will be alright, I promise. Some people have used cedar to keep away moths, and it does help to stop chewing insects (moth caterpillars, termites etc) when placed among clothes, or used for building structures. It isn’t used more generally in building, as it is very expensive - often about 3 times the price of pine or similar materials.
Bees love cedar hives. My husband and I have been using them for over 35 years, with no complaints or problems. It is very weather-resistant, and only about 70% of the weight of pine, making it much easier to lift. I am sure that your bees will love your Flow hive 2, and if they don’t, you can always ship it to me. I wouldn’t charge you a penny! 
