Cannot see my image on the Thunkable app

Hi all, I am editing my prototype on x.thunkable.com. Once I added an image on a screen and then changed my image. However, on the mobile app, I kept on seeing the old image (for many weeks, including after confirming the app was updated with other changes I implemented). I deleted the old image from the platform, so I assumed that the old image was somehow cached on my mobile. I then tested renaming the image, but now I still see the image on the web platform (using preview for example), but I just see a blank white on the mobile app. Did anyone else have similar experience? It’s frustrating that I cannot demo the app on my mobile, and I am not even sure hw to test if the image is presented properly. I’d appreciate any advice. Many thanks!