Cookie disabled error accessing application

Cookie disabled error accessing application

I've just created my first form.
I've clicked the "Access this application" button and I get the message:
Note :  Cookie is disabled in your browser. Please enable the cookie to continue.
I'm sure cookies are enabled.
Another thread suggested this was the website, so this is the URL:
https://app.zohocreator.com/zoho_david2253/railway-article-database/#Form:Railway_Article_Database

Thanks, David