Why did you put a "3" cap on stats??? My gm does stats differently and I got a one on that...? I don't even know why you put a cap. Is there a eighteen cap too??

Seriously... there's a cap on "override score" too. I also tried "-2" to "other modifiers. Doesn't wirk

The tools are designed to support the officials rules and published variants / UA when able. If your DM is using homebrew rules, you may run into issues.

Per the rules, the lowest a stat can start with is 3 and the highest is 18 (4d6 drop lowest).
With point point, minimum is 8 and max is 15.

Feat doesn't work either

That's true, but some monsters temporarily lower Ability scores to 1. Dndbeyond should support that at least. 

Why go to the trouble of putting a cap at all? I've been in a 30 Ability score GOD campaign before, there are lots of campaigns like that.

Point buy sure, 8 to 15, but MANUAL should be MANUAL. the PHB says that there are stats ranging from 1~30, and 20 cap for adventurers. As far as I know, the minimum Ability Score according to the PHB is 1 and the max is 20

1 and 3 are functionally the same if you allow a 1 to function at all. Either way you are massively crippled and probably shouldn't be an adventurer at all.

Well, that just gives more of a reason why they even bothered to set a cap if no one's going to do it(except me)

You should at least be able to override a score to 1 because of spells like Feeblemind.

Quote from Emmber >>

You should at least be able to override a score to 1 because of spells like Feeblemind.

 Oh yeah! I thought that was a monster that lowered Ability scores

Edit: No wait: intellect devourer

Yea there are multiple ways of reducing someone's ability scores but I find Feeblemind is the easiest to show because it literally sets their score to 1 - something that's impossible on DNDBeyond even with an override.

It'll probably change when they finally add in temporary effects - but who knows when that might be.