Hostinger VPS Webmin/Virtualmin SSL Issue

I have recently purchased VPS service from hostinger and installed Ubuntu 20.04 on it along with Webmin/Virtualmin. This is via their installation panel (Not custom install).

I am trying to use it as a basic-level web server except for email service. Everything works great except SSL. Virtaulmin provides Let’sEncrypt SSL service and I am facing issues installing it.

I have followed articles provided by hostinger itself and other sources but none seems to work.

A (IPv4) and AAAA (IPv6) records are properly set in DNS settings but still getting DNS errors. Here is the error log.

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for mahadev.profilehub.net
http-01 challenge for www.mahadev.profilehub.net
Using the webroot path /home/mahadev/public_html for all unmatched domains.
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. www.mahadev.profilehub.net (http-01): 
urn:ietf:params:acme:error:dns :: DNS problem: NXDOMAIN looking up A for 
www.mahadev.profilehub.net - check that a DNS record exists for this domain; DNS problem: 
NXDOMAIN looking up AAAA for www.mahadev.profilehub.net - check that a DNS record exists 
for this domain, mahadev.profilehub.net (http-01): 
urn:ietf:params:acme:error:unauthorized :: The client lacks sufficient authorization :: 
2a02:4780:d:54d::1: Invalid response from http://mahadev.profilehub.net/.well- 
known/acme-challenge/sjwBTF8dcOh8_A0SMETGM9e24IbjVPpSH0Px4yTACQY: 404
IMPORTANT NOTES:
- The following errors were reported by the server:

Domain: mahadev.profilehub.net
Type:   unauthorized
Detail: 2a02:4780:d:54d::1: Invalid response from
http://mahadev.profilehub.net/.wellknown/acmechallenge/sjwBTF8dcOh8_A0SMETGM9e24IbjVPpSH0Px4yTACQY:404

To fix these errors, please make sure that your domain name was entered correctly and the DNS A/AAAA record(s) for that domain contain(s) the right IP address.
- The following errors were reported by the server:

Domain: www.mahadev.profilehub.net
Type:   None
Detail: DNS problem: NXDOMAIN looking up A for www.mahadev.profilehub.net - check that a DNS record exists for this domain; DNS problem: NXDOMAIN looking up AAAA for www.mahadev.profilehub.net - check that a DNS record exists for this domain

Although error log shows that DNS records are not present, I can assure that DNS records are properly set.

Let me know if there’s any solution to this.