Thanx the letter said any application before 2020 will be normaly refused.My question is when does the 10 year start? Is it from when i was convicted or when i got the ILR? Another concern is why they are mentioning 2006 when its 2005?

I applied for citizenship in Nov 2015 through CNS.2 days ago I got a letter for my refusal as i do not meet the good character because i was working without permission in nov 2006. How ever this is not the correct date, I was found working without permission in nov 2005 not 2006. I arrived in uk 200...