Site no longer available after application access was removed


I created a new Tunnel and setup the docker image… Tunnel status is Healthy
I added 3 DNS entries to the tunnel… work fine and resolve to self hosted apps
I created a Application in Access and selected 1 DNS entry used in the tunnel… worked fine and got a password challenge before being passed onto my self hosted app as expected.
I deleted the Application in Access as the mobile app I used to connect to me self hosted app would not function with an additional layer of security challenges.

From the 3 DNS entries in the tunnel, only 2 are working still. The one used to setup the Access Application no longer works, any ideas?

I checked my firewall logs, the 2 working DNS entries hit my FW but the fault DNS does not reach my FW.

I’ve deleted the offending DNS entry from the tunnel, and removed the DNS entry in DNS management and recreated the it, but is still does not reach my firewall.

I get the generic error:

Error is

This site can’t be reached

The webpage at url might be temporarily down or it may have moved permanently to a new web address.