cannot edit on netbeans

["Kezeract." <kh...@gmail.com>]

Every time I press the Backspace key on my keyboard, it goes left, yes left, not deleting or removing the codes that I am typing. Same goes with other keys on my keyboard, either they go up, down, left, or right. I just saw the Editor Pin recently at the top my Netbeans app and I don't why it's there but I think that might be the issue, because if it is, I cannot click that icon and also the Editor Pin located in Edit at nearly the top right corner next to File. 
Thank you  Sent from my iPhone