Missing images from Dropbox import

Hello. I have been using this plugin for a few months now and found that this works fine when importing a few images from Dropbox. I am reworking my website and have been importing entire folders recently when I noticed many of the images were missing within WordPress.

I tested this recently using one folder containing 38 images. Initially I selected 10 and all imported without issue. I then selected the remaining 28 and about 14 were imported. I then selected all images in the folder and another 6 or so were imported. I ‘selected all’ another few times and eventually all the images have imported.

The images within this folder were all exported from Lightroom, individually named and resized to 2048pixels on longest side resulting in files sizes of about 300-800kb per image.

The fact that this partially works suggests the configuration is all fine. Can anyone advise if I am doing something wrong or am I overwhelming the plugin at all? Any suggestions welcome. Thanks