No 6PN DNS entries found for app

Hello we need your help
one of our apps if running smoothly as shown but the result of fly status -a payments :

App
  Name     = payments          
  Owner    = paypack           
  Version  = 899               
  Status   = running           
  Hostname = payments.fly.dev  

Deployment Status
  ID          = 1a50f5bc-de97-d6aa-dd45-ffa8c53856a9         
  Version     = v899                                         
  Status      = successful                                   
  Description = Deployment completed successfully            
  Instances   = 2 desired, 2 placed, 2 healthy, 0 unhealthy  

Instances
ID      	PROCESS	VERSION	REGION	DESIRED	STATUS 	HEALTH CHECKS     	RESTARTS	CREATED   
2b6a0428	web    	899    	lhr(B)	run    	running	1 total, 1 passing	0       	1h35m ago	
3faf453d	worker 	899    	lhr(B)	run    	running	                  	0       	1h35m ago

but it has no entries in the 6pn DNS so our other apps contact including our caddy reverse proxy can’t contact it which is called paypack ,
I think so cause I got this from running from fly proxy 8080:8080 -a payments which is giving this: Error payments.internal: host was not found in DNS .
But it seems like some of the logs are going through according to the app logs.
Also the results of dig txt _apps.internal do not include the payments app.
Any help would be appreciate.
Thank

Is this still happening?

No for now everything seems fine,
but I will let you know when it’s happen again
Thank you