Our stash size / Guild stash (need)

Please increase the size of our stash, add another page. I don't have any more room for new stuff because some of them are bounded, some are not bounded and then there are those that are not bounded but we can't sell it, therefore from the same item i have 3 of them occupying 3 spots and i can't put them one over the other. Either it is a "bug" with such items or I don't know. In the game we should have bound items (can't be sold) and not bound (we can sell) not something between this 2.
Increase our stash size, also add guild stash.