managed to start mining. In a daemon, this line is often:
15:39:38.564664 ERROR An attempt of too deep reorganization: 125471, BLOCK REJECTED
this is normal?
And what are your plans for a coin, a site, new exchanges?
It isn't really an "error" rather just a "log" message, you can just ignore it. Website is down for maintenance though explorer is up on chain.citadelplatform.org.
We also consider Citadel one of the most secure cryptonotes, without flaws on ringct's like several Monero clones or other known issues.