Don't worry — your website is live and visible to everyone on the internet. The block is coming from the network you're connected to, not from your website.
Why this happens
Many office and corporate networks use a security firewall (Sophos, Fortinet, Palo Alto and others) that automatically blocks websites whose domain names were registered recently. This category is usually called something like "Newly Registered Websites" and it exists as a phishing precaution, because most scam websites use brand-new domains. Since your property website's domain was just registered, it temporarily falls into that category.
The tell-tale signs are:
How to fix it
You have two options:
Is my listing affected?
No. Buyers and everyone outside your own office network can see your website the entire time, so your marketing is not affected. Nothing needs to change on your CRIBFLYER account or your website.