New to using D&D beyond, and I created a character for a campaign I'm joining last night. For some reason, bracers of archery aren't adding the +2 damage when using a longbow. It just shows the +4 from dex whether I equip them or not. 

Is there a way I have to attune them in the builder or anything? Can't figure out where it's going wrong.

Thank you. It was driving me nuts.

You can also see a list of all of your attunable items all the way at the bottom of your inventory page and select attune for them there as well.