Unable to create a Cloudflare access Application to lock down a Cloudflare worker subdomain

So i’ve tried to implement an Okta / One time pin lock on my Cloudflare workers using
the Zero Trust → Access → Create app → Self-hosted.

I’ve put as a subdomain, one related to a worker, with a valid domain that is owned on the account,
Added the Okta IDP and One time pin, placed a policy rule name, and added CORS.

Now, according to the message/snackbar/popup, it seems to have “worked”, but I’ve tried yesterday, the app didn’t show up in my list, and it didn’t today either…

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Finally it’s been resolved, the “Snackbar” doesn’t reflect on the actual response from the Server, when I opened the Console/Network Tab, I noticed it didn’t work correctly and with it an error code/reason