Edit. Now it's all clear. It seems that blockchain is just super super slow at the moment.

I'm sorry to trouble you with this matter but I don't know what to do now.

I tried to move Ether from Bittrex to Binance but the whole transaction seems to be lost.

Facts:

Bittrex shows status for withdrawal: "Completed"
Binance transaction history for deposits is empty.

TxId: 0x502930b30fc59115bfa6b292952a52498d2397db08e5095c8e6dced0dcabc97a

Etherscan does not have any information on it.

This is my first time that no trace of transaction is shown. How should I proceed with this issue?

Thank you.