I did discover one cool thing. If you actually mouse over the part where it shows your target number, a box pops up that shows the actual DC and your bonuses.
![[Linked Image]](https://i.imgur.com/W0W5Lit.jpg)
I think the numbers are just wrong here.
The Target is 15 and you ass up bonusses totalling +8 (+3 for Charisma 16, +2 for Proficiency and + 3 from Guidance I guess),
So your target displayed should not be 9, but 7 (i,e, 15 minus you bonusses).
Or am I missing something?