It appears that you used to make $6500 per quarter. Your benefits are $500/wk. If you earn more than $50/wk, then your benefits (after the first $50) are reduced by every dollar that you earn. So, if you worked 1 day last week (at $65/day), then your benefits were reduced by $15 ($65-$50).
Your earnings allowance ($50, EA) + your weekly benefits amount ($500, WBA) = $550. If your earnings are higher than $550, you are ineligible for that week.
Are you still applying for jobs and doing all the other required stuff?
You may need to just call, to see if the previous person made a mistake or misunderstood.

