Already fixed in v5.0.

Appreciate it, thank you. If I find time I will try sneak it into v5.0.

You in theory already can. Just get the image url of the image on the page then get any other image url and then replace that.

Some point in the future I plan to bring Android.

Thanks for reminding me. This is planned for v5.1.

Have you tried logging out and in again?

No.