it seems to be that you are not on the testnet network. and i noticed that you're sending the commands with attaching -testnet
bitcoin-cli -testnet getreceivedbyaddress 'mvKoQLrzovNbgALa2D7prh9pagd2QUKpWo'"
To run Bitcoin on testNet
Stop Bitcoin and open
~./bitcoin/bitcoin.conf using any text editor.
testnet=1 save and close.
bitcoin-cli listunspent 0 9999 you should see the transaction.
Anyway if you were already running it on testnet network
try the following command to get address balance
bitcoin-cli getbalance "" 0 true
"account" (string, optional)
minconf (numeric, optional, default=1) Only include transactions confirmed at least this many times.
include_watchonly (bool, optional, default=false) Also include balance in watch-only addresses.