So, in order for the key binds to work right you will need to change either the Binding.xml (all instances) EXTRAQUESTBUTTON to ExtraQuestButton
or in ExtraQuestButton.lua in function ExtraQuestButton:UpdateBinding() local keyButton = addonName to local keyButton = string.upper(addonName)

It has the key binding registered as EXTRAQUESTBUTTON (in the xml) and tries to look it up as ExtraQuestButton (in the lua)

Thanks for the detailed report.

I went with the latter option, as changing the binding name would reset the binding for players.