How could 5 bitcoins disappear?

Question

bitcoin

Yesterday I received several transfers to my wallet. All transfers were confirmed in 30 minutes.
But today all transfers are back to unconfirmed!
For the test, I sent another transfer to the wallet, it was successfully confirmed, but the rest were not.
At the same time, transfers on the blockchain seem to be confirmed, for example https://blockchain.info/address/143NTgWEjCm71LQevM... 182 confirmations are indicated in the transaction itself https://blockchain.info/ru/tx/8d7d661a67607bb43da8...
Tell me how this can be and what can be done?
UPD. it’s also strange that on the blockchain, ordinary transactions have a blue button with the number of confirmations https://blockchain.info/en/tx/02a47bbeea99ec49a2c6...
but mine don’thttps://blockchain.info/ru/tx/8d7d661a67607bb43da8...
although both have the number of confirmations in the table on the same page

Answer 1

Before raising an alarm, you need to check the balance on the only official Bitcoin Core client.
To date, the blockchain weighs a little over 100 gigabytes, pumped out in one night.