Sorry to hear you’re having issues after updating. Other users have reported that rebooting with no cables plugged in (other than the power cable) resolved this issue. If this doesn’t solve the issue for you, please contact support@neuraldsp.com for additional troubleshooting.
NDSP Support helped me roll back to a different firmware, then re-update to 2.0.0. Looks like all my captures were corrupted during a botched update to 2.0.0 when my QC locked up.