and write down the adress, and made the transfer. My surprise started when I saw it had 14 confirmations already and my bitcoins didn`t appear in my wallet.
I hope that you did copy/paste, not write down with a pencil - I really hope that you didn't write one character wrong.
Later, I saw that the number which appeared in the QR Button (of the main screen) has changed.
A good wallet creates new receive address every time, I hope that's the case for you too.
I restored my wallet twice but it has worked, my bitcoins seems to have been disappeared.
You restored the PC / main wallet, I assume. As the transaction is on the blockchain and confirmed.. the money is actually sent somewhere.
PS2: 1Lc7WtNeLmdC22vLU67QiPUvfrc6c5nV9f this is "my mistery wallet"
Yep, the transfer is visible. Now let's see where is that address going to.
I'll guess that android wallet is a light wallet.
I had such issue once with a light wallet - it "missed" some transactions. It was on PC, it was for a different coin, but maybe this helps you too: it had an option "reset blockchain and transactions". After clicking that, it took some time to read everything again, but then my missing transactions where there.
I hope you can do the same and retrieve your money.