How to stop Let'sEncrypt checking my domain for acme-challenge

Sorry if this question already asked before, but I can't found solution for my issue.
Previously I have site on Webmin server and use Let'sEncrypt SSL for the domain.

Now, I moved my site to Google Cloud Run. But the Let'sEncrypt engine keep check my site for acme-challange regularly every 30minutes.
Even after I delete site from my Webmin server, I still keep check my site for acme-challenge.
This make my Google Cloud Run cost increased.

LetsEncrypt acme-challenge

Do you know how to stop the LetsEncrypt engine checking my domain?

Solution 1:

You have an ACME client with HTTP validation still running somewhere and trying to get a TLS certificate for your domain. You need to find this ACME client and disable it.