Is it in the latest version?
Is the node fully synced?
For now;
Try the GUI, view your unspent outputs from coin control feature:
Settings->Options->Wallet tab, tick "enable coin control features"; Go back to the main window, in the "Send" tab, click "inputs".
Node is latest version, fully synced, pruned.
It just get's weirder: in bitcoin-qt -testnet it shows available balance of 0.01 tBTC, but in Send > Inputs, there is nothing, quantity = 0, amount = 0.