Please update your nodes to 4.0.4

MANDATORY UPDATE!

This version contains fixes for protocol version 2 initial difficulty value and recalculation rule.

https://github.com/ergoplatform/ergo/releases/tag/v4.0.4

https://twitter.com/ergoplatformorg/status/1356714816145141760

Please help the network with your GPUs!

https://twitter.com/ergoplatformorg/status/1356706696157143041