Samsung Galaxy Tab S5e SM-T725

Using /e/OS Setup
,
10

I have read that article and I see no reference to it working on Android 10.

I wrote a few notes on it here Install TWRP on Samsung Galaxy Tab S5e - #23 by aibd

Edit, that article is to bypass RMM or KG Prenormal, do you have that issue? It would show on Download mode screen.