I got one too. They’re slowly returning my 400K sats that got rugged by their “experimental” Lightning wallet.
My favorite zaps are the ones from nostr:npub1jg552aulj07skd6e7y2hu0vl5g8nl5jvfw8jhn6jpjk0vjd0waksvl6n8n that just say Blockstream. Hahaha I dunno why, but it’s hilarious to me. Someone needs to give the person running the Nostr account a raise. 
Discussion
Wait, what's the story behind this? Which wallet?
nostr:note1j30jk7e7zyp8pact8mcpnyh40ldstae824kgaz6cep0fvlp5ztms0k4uq2
Oh, I thought you actually lost the 400K sats and not just having liquidity issues. Wouldn't you just be able to close the channel onchain anyway?