Trying to add photo to campaign and getting offline error message

Trying to add an image to a campaign design and getting this error message saying that “offline mode is enabled”. I have no clue what is causing this / where to do the image callback. I’m connected to wifi and working in the office, so not sure how I’m “offline”? My images are less than 1MB so it should be fine from a file size standpoint. Any insights on this issue would be much appreciated!