Thanks for the reply, nc50lc!
- I did copy-paste a few of the addresses from the list, by your advice, and everything looks fine. I got the same addresses in the txt
- I did check the directory and see only one wallet.
As I said, I didn't have that kind of problem before. The guy, who sent me the btc, did that before and I was doing exact the same action like yesterday - open my wallet, go to "Receive" and copy the address there.
Today, when I saw, that I don't have the transaction in my balance, I checked all addresses in my list very, very careful and didn't find that address at all there. That's very weird...
Is it possible the receiving address to expire? If it's possible a certain btc receiving address to expire at all?