Try increasing the RAM resource limit in the settings for your service.

Adding a custom domain should not affect the way the app behaves. Adding a domain is basically just adding another URL that points to that instance.

Did you make any code changes before adding the custom domain?

Does this happen when you try to access the webpage several times locally? (I'm currently not able to access the generated domain at the time of writing this)

Does this only happen with puertoctes.com.ar? and not other subdomains?

I’d check the codebase to see if there’s anywhere in the code that’s fetching puertoctes.com.ar. That might be the cause of an infinite loop.