really sorry for you. But the checklist clearly says you have to submit 3 of the following set of documents. And its absolutely must.. not optional..!!
Joint ownership of residential property or joint residential leases or joint rental agreements listing both the sponsor and the principal
applicant; (Minimum 1 document).
Proof of joint utilities accounts (electricity, gas, telephone); (Minimum 1 document).
Important documents for you and your sponsor showing the same address, such as copies of Government issued identification
documents: driver's licenses, insurance policies, etc.
Important documents for you or your sponsor showing that you are recognized as each other's spouse (such as employment or
insurance benefits). (Minimum 1 document).
Documentary evidence of financial support between your sponsor and yourself.
Other proof that your relationship is recognized by your friends and/or family (e.g. Letters, social media information showing a
public relationship, etc.)
Even I got married in this May and submitted application in June 1st week. And I got sponsor approval. So collect all documents and then apply again....All the best