It seems the "maintenance" message cannot be change on Prestashop.Right now, mmy publishing activities are on hold and I don't know when it will comme back. And if it come back, it will probably be only for Lynx games, not GB ones.
I will "soon" send the remaining stock of Sheep It Up and DMG Deals Damage to Broke Studio, so they will put it on Homebrew Factory as they have now open this fullfilment option.