Hello, welcome to Blurt I hope you enjoy your stay here. Yes, you have to pay a small fee for all your actions in Blurt commenting, voting and transferring, etc, this helps to avoid problems with spam.
To solve the problem of images I use a simple platform and it has served me so far, it is called postimages.org , you just upload your image and copy the direct link that appears there, copy it in your publication and you will see the image you want in your post. I hope this information is helpful, a hug! ☺️