Hi guys, I'm sorry to write these lines, but this product is just not working for me - even though it looks and feels amazing when its working. I am on Sim Update 4 Beta with the latest Update 1.0.3. I tried for the 4th time today to perform a flight and again it was not possible due to a crash. At least this time the plane didn't just completely freeze, but I got an error message on all displays. I suspect this time it had something to do with CPDLC. However, it doesn't matter for me anymore. I tried Sim Update 3 with version 1.01, version 1.02 and now 1.0.3 and every time I have a new failure - something that does not seem to work. Sometimes 3 hours into the flight, sometimes on the ground. I'm not a beta tester and was expecting a few bugs here and there - but at least I hoped to have a flyable product for my 66 EUR. Let's not even begin to talk about the popup instruments. In its current development stage the product is useless for me. How do I get a refund?