Why can't I print my invoice? Where is the SMS verification code? There is no place to start.

According to the information you provided, if you can't issue electronic invoices by yourself through online channels, the following situations may exist:

1 Your number is in an abnormal state such as arrears and blacklist. It needs to be restored to normal state before it can be issued;

2 You have already issued a paper invoice, and you can't issue an electronic invoice;

3 The invoiceable amount has been exceeded, and electronic invoices cannot be issued after the limit is exceeded. Please print the original paper invoice in your Unicom business hall.

4 For users who recharge through third-party channels (such as WeChat, Alipay, Yi Hao, air recharge, etc.), please consult a third party to receive the invoice.

The above situation remains unresolved. It is recommended to contact the Unicom customer service to which the number belongs.