Hello @Roxan ,
Welcome to the community,
Are you already an EE customer or are you trying to apply for an Apple device and have no account with EE?
If the latter, sign out, click on shop and you should be able to do so, also, you cannot order an accessory without being on contract either with phone or sim only contract.
We do need more information in order to help you.
To contact EE customer service dial 150 from your mobile phone or ring customer service for free using web based app or another phone: +44 800 079 8586 or +44 800 956 6000.
