If you want to make an account to switch to you must press f1 and then there is a link called ACCOUNTS click it it should open up and you should see a plus sign click that then it opens a new inter phase which gives you the ability to add your account just do what it says add username, password, bank pin if you have one then your reward. Now press f9 to open your scripts click on the no account and select the account you just made. Then it should allow you to use and work your scripts. Hope this helps
p.s dont click the pencil thing on the scripts page it screws with your system.