Fiverr with the latest updates is giving this warning. This actually breaks the trust between the seller and new users.
Recently few of the clients to whom I had to suggest hosting, send my live website link to this message from Fiverr. Due to this message, they actually feel unsafe as they can't trust someone they started talking to before few hours
For website designers and developers, this issue can cause issues rather than then benefits. As at first, this was linked to files only but now a normal website is also marked as unsafe by Fiverr.
I hope this matter can be looked into and whoever is facing such same issue please let me know here