Not sure how you try to import pictures. The way I do it is to right click on image, left click on copy image address, then on the bottom of the text box left click on (blue rectangle).
Optional Image URL box will appear near the bottom of the text box. Left click on green ADD button. By the by, first delete
https: which appears there. Right click and paste. You can import almost any image from anywhere and it's easy once you get into the routine. The image will be copied within the text box wherever you left your cursor.