I ran into an issue today while trying to register a new ACME account on PMG 6.4-3, it seems gTLDs are not supported in this dialog yet.
Is this a bug?
Thanks for reporting this!
Could reproduce the issue (and will try to come up with a sensible patch).
This is 'just' a front-end validation problem (the length-limit on the TLD being 6)- i.e. if you like you could create the account using the API or `pmgsh` directly: https://pmg.proxmox.com/pmg-docs/api-viewer/index.html#/config/acme/account (the POST method)