Hi wyskwok
Thanks for your post. I hope you find the community forum to be full of useful information, advice and support.
I would recommend updating to the compliance update 2019.2.1 as it has fixed a few performance issues. Please see the attached article Incorrect Entitlement Balance reports after upgrading
If this is still showing incorrect, please go to the forum post Entitlements Report Incorrect, this is where you can take the next step if this issue is continuing.
Let me know how you go with this. If this resolves your inquiry please mark "Accept as Solution" so other users can find this content easier. Keep me posted!