Why does "Under Attack" Mode prevent me from Requesting Index on GSC?

So today i noticed a lot og DDoS attack on a Website i own
The domain was bare on namecheap hosting, not connected to Cloudflare.
Reaching out to a Customer service, i was asked to add the domain to cloudflare and activate “Under Attack” feature which i did!

After doing this, my website became stable and i proceeded to try requesting index for most of my new posts.

Guess what?

The request was rejected and the reason? (See attached screenshot below)

Got back to cloudflare and deactivated the “Under Attack” feature and was able to submit all posts for indexing!

Does it mean whenever the feature is active, search engines are not allowed to index a website?