if this is a test network, then there should be test transactions, why don't you send coins from the pool for the test? remember such a coin as qtum !!!
I gave a full explanation in our Discord server regarding this.
It comes down to the pool not paying out because their isn’t enough ring signatures on the network to process the transaction but we have solved this issue when it comes to the mainnet blockchain.
As of writing this, I must also point out that there has been transactions on the blockchain (~200 so far). If all you’re after is to have a balance in your wallet, I may suggest solo mining via the core daemon as you’re rewarded a full block paid directly to the address given.