You are likely being scammed.
An address remains valid and usable forever as long as its private key is accessible. If any service is generating and deleting private keys, it is run by completely incompetent people and should not be used.
The "Delay of network" argument is equally baseless - if they have received the coins, they are in sync with the ...
If your wallet is a custodial wallet where the private keys are managed by the provider, your only recourse is to contact the provider.
If your wallet is a non-custodial wallet where you manage the private-keys yourself, there are several possibilities
check that your wallet is fully synchronised. How you do this depends on which wallet you use.
check the ...
what should i do
It depends whether you have a Blockchain.com account or a Blockchain.com wallet.
If you have a Blockchain.com account, contact Blockchain.com support.
If you have a Blockchain.com wallet, check the transaction history and find the Bitcoin addresses which held your money. You can then check those addresses in several different blockchain ...
I sent it straight to another site
Evidence suggests not.
At the time of writing, none of those addresses has any history of transactions in the public blockchain for Bitcoin (BTC). The second address 8usk...TLnj does not appear to be a valid Bitcoin P2PKH, P2SH or Bech32 address
Therefore the "site" you "withdrew" Bitcoin from, or your subsequent "sent ...