Hello,
that is very sad.
Helicopter could flip over when compensations are not good.
Then immediately after lift off helicopter will crash.
This is very important to set properly.
Another thing could be when you lift off but during spool up you are giving stick input, so then swashplate will stay tilted. And then model will flip and crash.
So it is very important to read manual and if you are not sure in something, do not try to fly.
Unfortunately I am very busy, so it is hard to reply to hundreds of messages each day
We have to also move work forward.
But I replied to your question. Unfortunately creating multiple threads is not good idea. You can always change original one if it is same or related problem.
Also this thread is meaningless, because you are only telling what happened without absolutely no detail.
So it can't help you or anybody else.
If it is related to your original problem, you can always write in the original thread. Then it would be more clear, because you do not have to write all details again. And for us it would be more clear because we can help you in a better way as related informations are at the same place. Not in 3 different threads.