If you wish to submit the application under your iOS Developer account, you would need to follow next steps:
Step 1: Click on Publish button and then Choose the platform you would like to test your application on (in our case it is iTunes App Store)
Step 2: Then click on Submit Myself button located in the upper right corner of the window. Go through the first and second points. In Create Certificate section point download a certificate and go to apple.developer website.
Step 3: Go to App IDs section and create a new Application ID (please, refer to this manual)
Step 4: Go to Production section and press +. Then choose App Store and Ad Hoc option and then cick Continue
Step 5: Click Choose file and chose distribution_identity.certSigningRequest that you downloaded from your reseller site, press Generate.
Step 6: Download generated certificate and go back to your reseller website to Upload Distribution Certificate section and upload ios_distribution file, press Continue after.
Step 7: Go to apple.developer to create Distribution Certificate. Chose Distribution and press +. Then choose App Store and click Continue
Step 8: Choose App Store option and click Continue
Step 9: Choose needed App ID and click Continue.
Step 10: Choose recently created production certificate and click Continue
Step 11: Enter the name of certificate and click Continue.
Step 12: Download created Ad Hoc certificate and press Done.
Step 13: Go back to your reseller site and upload the certificate and press Continue
Step 14: Click on Download button in order to download the build (it will be given in the .ipa format).
Step 15: Follow further steps in order to finish the submission process.