Will not let me revise item on mobile app

[Copperkettle]

I listed an item last night. There is one bid already.
I wanted to add more photos but when I click on revise listing it says that revise is not supported or something similar. States that more options available on the computer but I can't revise on there as I use the camera on my phone.
I've always been able to revise before like this. I know there is a bid but I thought I could add pictures.
Any ideas?

It actually says revise not supported for this item.

Yes sometimes you can't edit on the mobile app but you can on the full site. You'll just have to email the new photos to your computer and download then upload them that way.

Or it could be because of the bid as technically you are altering the details upon which the buyer decided to place a bid. But I'm not sure.