Thanks, to better understand, "if" I own the private key associated with this address, then:
My balance is 30.99099822 BTC.
which includes:
- the 30 BTC from the P2PK transaction made in 2009.
- The 0.99 BTC that Electrum recognizes as confirmed for that address

But I can still spend 30.99 btc, right? If yes, I don't understand Electrum decision to exclude P2PK balances from the address balance!

getaddressbalance is not accurate:


But real balance is 30.99099822 BTC

see https://blockchair.com/bitcoin/address/18jANvQ6AuVGJnea4EhmXiAf6bHR5qKjPB
and
https://blockchain.info/balance?active=18jANvQ6AuVGJnea4EhmXiAf6bHR5qKjPB

What can be wrong? The servers I'm relying on?