Hello,
First of all, thank you for your purchase.
I also looked into this when I created the plugin, however, I did not find a way to upload images to Instagram and to keep their aspect ratio, as when I upload images using the Instagram API, they require the uploaded images to be in a fixed set of aspect ratios (and they deny the image upload if the image is not in the aspect ratio list which they require).
I will try to contact Instagram support and ask them about this, however, I am not sure if they respond regarding this info. I will try to get more info on this, however, currently I don’t have a way to keep original aspect ratios, sorry for this.
Regards, Szabi – CodeRevolution.