I've recently finished development on an app and have reached the point of deploying it to the store via iTunes Connect. I had managed to fill out all the required information under "App information", and "Pricing and Availability".
However my issue is i am currently stuck on the "Prepare for Submission" section. I have managed to upload screenshots and select a build. But it will not allow me to save, so essentially any edits under this section are impossible now due to the below error i am receiving:
"Screenshots and app previews for the largest display sizes of your app’s primary localization must be uploaded directly., Screenshots and app previews for the largest display sizes of your app’s primary localization must be uploaded directly."
The above seemed to only occur after switching localisation to English(U.K) and then uploading my screenshots, after i saved those last amends this is when the error started occurring. However i am unable to revert any changes due to the above error.
I apologise if i'm missing something obvious here, but looking through iTunes Connect documentation and scouring the internet has came up with nothing.