I thought the Q stood for Questioning, not Queer? Makes more sense.
Maybe.
There's not exactly a single LGBT+ society/club.
There are lots of little ones, for individual towns, cities, schools, universities, even charities and countries.
Each one can use their own acronym and definition.
My college society named themselves LGBT+ to include LGBT and essentially anything else non Heteroloveual.
My Uni however uses LGBTQ, where I'm pretty sure Q means Queer.