Our WSUS is running on Server 2012 R2 version 6.3. We have 300+ Windows 10 1903 computers and all of them are registered in WSUS under Windows 10 Computer view.
In WSUS under Windows 10 Updates views, its showing all latest updates but needed count and installed count, it shows 0.

Also it doesn't show 1903 updates. In update view settings all related Windows 10 products are selected.

WSUS updates are showing perfectly for other OS machines like Windows 7, Server 2012 R2, Server 2008 R2.
WSUS server has latest Windows and WSUS updates up-to Jan 2020 updates.
No idea why its not picking-up machines. Looking for help.