Issues with Publishing website


I have been experiencing issues with publishing my website design for my clients to see. Until now whenever I had issues with uploading it's because I hadn't web optimized my web images (which is fair enough) and I got a warning message telling me to reduce the size of the website.

Now however I am simply getting a 'could not upload website. please try again in a few moments" message. I have been waiting. And trying. For three days now. Couldn't the message be a little bit more helpful? What am I doing wrong?