Q: How do I add a cover to a page?

Can't seem to figure this out. I have scanned a cover that isn't current attached to a page (https://comicvine.gamespot.com/glory-avengelyne-1-long-live-queen-faith/4000-121060 For reference, I have the Chromium version). I have it scanned, and can "upload" it to the website, but I don't see how to save/attach it when editing the page.
Thanks.

The alternate cover upload is broken on the issue edit page for some time now. But it can be circumvented by going straight into the image gallery of the issue by adding "/images" at the end of the url.

https://comicvine.gamespot.com/glory-avengelyne-1-long-live-queen-faith/4000-121060/images

@killerz: Great, thank you for the help

@killerz: Follow up question

I have a copy of Cover of cover C (https://comicvine.gamespot.com/gen-13-monkeyman-obrien-1/4000-118713/) of this. The current Covers B-D all have a watermark on them. Would it be best to leave the covers as is with the watermarks, or submit my scan with signature?

Clean covers would be better, even if they are smaller or in worse quality. We shouldn't have watermarked covers here, but some have slipped through.