dero.miner.rocks is on a longer chain. stocks.exchange seems to be also there. It's very like the same that was happened yesterday - pool.dero.live is building its own blockchain regardless of others. May be it's because of its heavy load?
Yikes... I just transferred 37 DERO from stocks.exchange to my local wallet. Hope it didn't end up on a fork and shunted off into the abyss.