What block number are you seeing?
Normal state: The block height is equal to the current block height of the waves network
Atypical state: Block 0
So, If you found (Block 0), please check your connection (restart your connection or router) because your wallet is offline.
If you use VPN service or something else, please disable it.
Also your IP can be blocked by the Cloud Flare or your antivirus/firewall blocked the connection.
Then, please, reload your Waves account.
The balance can always be checked in the explorer and this information will always be correct, since the wallet is only an interface.
So, before you start to get nervous check the balance of your account here - http://www.wavesgo.com
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