Thanks, I did try both pools but I think it may be related to the mining software. XMrig was updated for the recent Monero7 fork, Incognito is based on the previous Monero algo? This would probably cause the error. I'll try different software.
Yes Incognito is using the original cryptonight/monero algo.
Not cryptonightv7
Confirmed incorrect mining software (made for CNv7) was the issue.