Create subdomain on VM gcloud

Hello all.
Nice to meet you all. If my question is not clear or stupid, please correct me. Many thanks.

I have student account github so I have free domain from and free 300$ from Google cloud. And free Mailgun account.

I created a VM and install Discourse successful. But I hit a stone when receive admin email because I can not get email due to can not add MX record and CNAME to root account.

I search alot but there is no guide or something talk about add subdomain in VM Gcloud. Only Gcloud App Engine only.

Anyone please help me, any solution or link for guiding like my case.

Many thanks

You’ll need to find this information elsewhere, including by contact the support at the company you are hosting with.

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