We are aware of issues on Octopus protocol, with users experiencing 100% rejected shares.

The error is affecting several plugins NBminer (all versions), and Nanominer, and would appear to also affect other miners too. We're working with them to get things operational again as soon as it's possible. In the meantime, there is no other option than to switch to another algorithm to mine or turn off your mining until the issue is resolved. We will update this article as soon as we have any more information.

Thank you for your patience,
Your NiceHash team