Subdomain added, it will take effect in two hours. If you're not using HelioHost's nameservers, you'll need to create an A/AAAA record to Morty's IP address for the domain to work.
I'm not able to access your site past the Cloudflare security page. You can check the logs in Plesk to see if there are any errors listed there, or try disabling Cloudflare temporarily to see if that's what is causing the issue.
It looks like your disk space has been increased to 4000 MB. It's possible it just needs an Apache restart to take effect, but an administrator can look into this in the morning.
The only payment methods for debit/credit cards we accept are PayPal or Stripe. You could also alternatively donate using cryptocurrency or one of the other methods listed here: https://heliohost.org/donate/.
Domains added, the changes will take effect in about 40 minutes. You'll need to create an A/AAAA record to Morty's IP or switch to HelioHost's nameservers for the domains to work.
Looks like your account has exceeded the storage quota. You can either upgrade the storage at https://heliohost.org/dashboard/storage/, reset your account, or request some of your files to be deleted by an administrator.