You're unable to add another product to your account at this time.

[Rky]

I have EE broadband and EE SIM PayMonthly, I want one more SIM, so in EE app I can see EE one which gives 20£ discount per month and contract will be monthly but when I tried to buy I see this.

Is there any sense putting restrictions online but allowing to buy on call? 

Most people won’t buy as online is convenient.

[Chris_B]

@Rky This happens when you’ve just joined EE and until your paid a month or two of bills you’ll not be able to add an additional line.  EE want to be sure your going to pay on time as your a new customer. 

[Rky]

But I’m 2-3 years old customer with same email address 

[Schockwave]

@Rky , I would suggest ringing customer service, as this does seem odd, especially if you have not had any late payments, they will be able to take a look.

Dial 150 and then pressing 2 and you will get a person to speak to.

[Matt_124]

Have you had your Mobile Account for 2-3 years? This eligibility is based on your current Mobile Billing Account tenure and payment history.

I would ensure that you've not somehow opened 2 separate Mobile accounts in your efforts to get a SIM sorted as per your previous posts.

[Rky]

I always pay using DD, so payment is not an issue. A few account numbers are listed, but the system should detect my old and loyal status based on my email address. Why can’t I add the line online, but I can add it offline?

[Chris_B]

@Rky  Doesn’t matter how long you’ve been a customer of EE for when it’s a different account it’s based on how long that account has been opened for not your email address. 

How long has this account been open for  ? ie the one your trying to add an additional line for.   It’s based on this account not any other accounts you might have as they are not trying to add an additional line