Euro-Pro Shark GI490 Iron "won hot" Questions

...new steam generator iron , the the valve will not screw off to allow me to pour the water away , why I have just finished ironing and it won't unscrew Perhaps it won;t unscrew whilst the iron is

...of the iron and this caused wet spots that circle when I iron over it. Seal on iron is disolved. replace iron The iron isn't hot enough. Water won.t come out, if it is boiled away into steam

won't turn on. I've tried different outlets. The digital display does not come on and the iron does not get hot. please see the cause and fix it:a) tank  or ports clogged. Dissasembly