Eva I had that issue for a while on my iPad, it's something to do with the amount of time you have been on the NT site & it registers you as being inactive so when you go to post it says you have to reload. To get round it, before I posted anything I pressed the key to select all, then copy and voila, in the event the page came up with reload I was able to log back in and just paste and then post. So once in the habit of copying what I intend to post just before posting I rarely have to go back and retype - I hope this little tip helps, I know just how darn frustrating it is to lose all the thought and effort you have previous put in