Create a Lightning invoice for 0.00021540 tBTC or less to claim article's pending rewards.
I try out Lightning Network using Eclair app for Android ...
I also use Eclair. It's good except I'm getting some errors, so I think it's more limited and buggy than other more developed wallets.
I can't pay for creating a Group and I can't set a tBTC address for payouts. Maybe the devs are working on fixing this.