Error! Can't upload images or use default post in Newspaper Travel Pro

Hi! 🙂

I just changed my website to Newspaper Travel Pro demo’s, but I having problems in updated some important parts.
I checked it all, I don’t have any plugin conflit and have already cleaning the cache, but I’m still having troubles when I try to upload my own picture in author box on the Home Page. I don’t even have an option to choose a singluar circle picture on the TD Componser.
Also, when I try to change pictures on “Top Destinations” area an error that shows “invalid data, current state has involved an issue” appears on the right top of the screen.
Third, my posts are with differents templates, even when I put it to show the default one. For example, I have so many links in my posts to another posts, but when I click on it, appears a different model from the post template of Newspaper Travel Pro’s demo.

I don’t know what more can I do. Can anyone help me?

Best regards,

Amanda