I don't know what is wrong

The reporting for both the ATE and the ETL doesn't tell me anything when it doesn't work. No error or anything, just blank, I have no idea what and where the problem is. It is very time consuming and lead to frustration. Sometimes it is a stupid thing but it takes me hours, days, and sometime I give up for a while, to find it and fix it. I wish it would give me a clue.

We use third party report generator called fast-report v4

www.fast-report.com/en/

We have already bought a license for version 5 of fast report,
but we are not ready to release never version because we have test everything first.
Never release may address the problems you are having.
You can try using their forum to ask questions

www.fast-report.com/en/forum/index.php?showforum=13

If you want us to help you to design reports we are happy to do so on chargeable basis

FYI: As promissed latest version is using Fast-report version 5.