Have just started battling so am still very confused. :)

When I accidentally selected 3 weapons I got an error message. When I tried selecting 2 scrolls I didn't get an error message but only one of them seemed to register. I'm guessing we can only use one scroll at a time but could somebody confirm it?

Weapons seem to work on a different system in terms of selection. You can select as many weapons as you want to at once, even though you can only use up to two in one turn. Potions and scrolls, however, only allow you to select one at a time and you also cannot unselect them, meaning that if you accidentally select a scroll or potion you don't intend on using, you must either select a different scroll/potion or leave the page and reenter the fight through the statistics page.

Thanks. I'm still experimenting and couldn't find the answer in the weapons guides.

Edit: I found the answer in the basic weapons guide afterwards. I wasn't looking in the right place. Ooops.

or refresh

I am not sure if it is just my computer or something, but when I refresh, everything is usually still selected.

Try a hard refresh (ctrl + f5) maybe?