Don't use ODAG, it is not possible to deploy between environments without manual intervention, time consuming + open to introduce new issues.
If you promote from UAT to LIVE ODAG reports, you will have to manually setup report template every time, forget about DevOps approach. 2 years old issue. https://support.qlik.com/articles/000056504
If you don't have full access to LIVE environments you need to introduce other tool, I recommend Power BI to on-Demand reports with huge datasets and it is really cheap.