I’ve created a simple html form with POST request. In general it works fine, however for certain textarea contents it returns with
Service Unavailable 503 error
For example, it works fine with the posted content:
“So you’re wondering when to buy bitcoin?”
but fails with the content
"So you’re wondering when to buy bitcoin?
Choosing the right time to href=“https://coindiligent.com/how-to-invest-in-bitcoin invest in bitcoin is crucial.”
as I see the “https://” part or the “bitcoin” word cause the 503 error.
Is it related to some hidden firewall rules? In this case how can I turned off this POST request filtering? I’ve no any firewall rules setup and I’ve free plan.
Thank you for any advice!