Ark Dev Kit uploading issues

I am encountering a problem while trying to upload a map of mine. Cooking it works perfectly fine, though there is no way for me to select a preview image since whenever I click on browse to search a picture it just switches between the cooking window without opening another instance of some sort of an explorer window as it used to do. I have already uninstalled the entire dev kit and reinstalled it afterwards and yet I am still encountering the same problem.

It would be awesome if anyone knew where the issue is and had an idea on how to fix it.

Thank you in advance.

Have you checked to that it isn’t opening that window behind the devkit instead of in front?