It also looks like you have might have changed hosting and / or DNS providers. You have 5 IPv4 (A) IP addresses which return different results so are pointing to different servers (Apache and ghs). I am not sure what your IPv6 addresses point to.
It looks like you need to do cleanup your DNS and server admin. If you want to resume using Let's Encrypt certs again, let us know when you have your HTTP site working reliably. That is the requirement for getting a cert using the http challenge.
At this stage your questions are better directed at support for google cloud, cPanel, and/or your Wordpress plug-in