Supplier won't add invoices for me to claim itc

You can not  add  invoice in  GSTR 2 because  it is not active on  GSTN portal 

For  Input tax credit  as per section 16 of the CGST act 2017 you have fulfill following conditions 

1) you must  have correct  Tax invoice with correct  GSTN no 

2) You  must received  Goods / Service form supplier 

3) Supplier  must  Pay  GST  to  GOVT  collected form you . 

4) Recipient  must file return . 

Also you product  is under  block  credit  under Section 17(5) ,then you can not claim credit .

Thanks. The product is an electronics power supply. I know that 1 and 2 are correct. I do have a tax invoice with the correct GST and the tax amount is stated in it. I have also received the product. How do I know if he has infact paid the tax and if he has filed a return. If I have already paid it to him, its his duty to pay the tax (on which I have no control). If he has not, then that would mean he has taken that amount for himself.