Have you uploaded content with an image that appears disproportionately in the app?
First of all, do not worry! with the press of one button, everything will work out!
You probably missed seeing the image formatting bar.
Click on the image when the content is in edit mode,
The image adjustment bar will now appear.
(Sometimes the bar hides, so it can appear at random places on the page 😉)
Click on the 100% button on the bar.
*Please note: If the image is still not valid, make sure that the image size does not exceed 900x700 (the ideal image size)