​How long is the trial period supposed to be?

There is no time limit. The xCloud free plan is not a trial that expires: it stays $0 for as long as you have one server connected, with up to 10 sites on it.

The free plan is the xCloud control panel for a server you already rent from a provider such as DigitalOcean, Vultr, Hetzner or AWS. It does not include a server: your provider bills you for the machine. Adding a card is part of verification for new signups and activates the free plan; the free server’s bill stays at $0. The free plan has limited features (no backups, staging or team members), and adding a second server moves you to per-server pricing.

If you want xCloud to provide the server instead, choose xCloud Managed hosting. It is paid from the start and has no free trial. To look around without connecting anything, use the Playground (demo sites are removed after 24 hours).

Everything the free plan includes, what it costs to grow and how to start: xCloud Free Plan.