Hey there Minou, actually it's lockout basically there's too much N . you can see this based on the "too green" aspect of the leafs, that's basically what happens when there's too much N : the leaves can become a bit shiny or too green, then you find signs of deficiency even though you're feeding. So you need to maybe even stop feeding altogether for one week or so then start feeding again but at half of the dose you're currently giving which is much too high. Hope this helps ! đ