Hi there!
I have the same issue!
If DHL and WooCommerce PayPal Express Checkout Gateway (by WooCommerce) are running both, i cannot set a picture for my posts.
If i deativate one of them – i can set a picture for a post.
@fitlifebox: What caused this issue in your project?
@DHL-Support / @shadim: You are the author of this Plugin (DHL for WooCommerce – the combo with an extension by WooCommerce seems to cause this issue… Now who has to act? You or WooCommerce… I don’t know ??
I would suggest to communicate with WooCommerce and solve the problem togehther!
Best Regards!