While trying to test a different mod, I found out about this bug, I've given myself a custom golden chestplate with 99 Defense Armor Points but the mod only displays the Armor Point values of the original golden chestplate which 5 (2.5) Armor Points.

I'm using version 2.0.1 of the mod, the older version 2.0.0 did not have this issue, version of minecraft is 1.17

It can be fix.
However, the Detail Armor Bar currently does not support armor points greater than 20.

Fixed in 2.0.2