That the problem, I don't see any transaction or my balance.
When you click "
reload account", mycelium will re-sync and search for your selected account's transactions from scratch,
is the "
syncing in progress...." in the accounts tab still displayed? If yes, wait for it to finish.
Also, do address '123' and address '1234' starts with a different character, say '3', 'bc1' or '1'?
Because, you might have clicked the QR code in the balance tab that changed the displayed address (
no worries: all are included to your account),
but still it will be automatically replaced once you've received a transaction.
Lastly, paste your receiving address "
123" to a blockexplorer (
https://www.blockchain.com/explorer) to confirm if there's really a transaction before trying to recover anything.