You must work at least 1560 hours. However you also need 52 weeks of full time work. A full work week is 30 hours or more. However you cannot carry extra hours over into weeks where you are short hours. What this effectively means is that if you worked 45 hours one week and 15 hours the next week, the first week will count as one full time week - and then next week will only count as half a week. The extra 15 hours you worked in the first week cannot be carried over into the second week.
So I have a work experience of 1 year in my occupation but it is not continuous. There is a gap of 3 months, is that the reason why I am found to be ineligible to enter into the pool?