Plans & Billing Overview

How plans, subscriptions, and quotas work in TDC Site Builder — who pays, how grace periods behave, and how plan changes lock sites.

Blox uses a subscription-based model. Every workspace runs on an active plan that dictates feature availability and resource quotas (such as sites, pages per site, CMS collections, forms, bandwidth, and AI credits).

Subscriptions Belong to a Person, Not a Workspace

This is the single most important thing to understand about billing here: a subscription belongs to the user who owns the workspace, not to the workspace itself. If that person owns several workspaces, all of them share the exact same plan, billing cycle, and subscription status — there's no such thing as "Workspace A is on Pro while Workspace B is on Free" for the same owner.

One active subscription per owner. Each user can hold at most one active subscription at a time, and every workspace they own resolves its plan by looking up that single subscription.
Only the Owner can manage it. Changing plans, updating payment details, and viewing invoices are all restricted to a workspace's Owner — the person who created it or received it in a transfer. Members and collaborators inherit the plan's access but never see billing controls.
Site-count limits are the one thing tracked per workspace. While the plan itself is shared, each workspace's site quota is checked and enforced independently — see Plan Limits & Automated Site Locking below.
Ownership transfer moves billing too. Transferring a workspace's ownership to another member (from that workspace's Team tab) also transfers billing responsibility — the new owner's payment method takes over future charges.

Managing Your Subscription

Open your billing dashboard from either:

The Profile Dropdown — click your avatar in the top-right of the header and select Plans & Billing.
The Sidebar Shortcut — click the plan card at the bottom of the sidebar.

Both open the separate Plans & Billing page at /billing with the Compare Plans tab active. The same page's sidebar, under Billing & Plan, also holds:

Plan Usage — your real, live usage against every quota, broken down per workspace and per site.
AI Credits — purchase extra AI credits and review your usage when the AI Assistant feature is available.
Payment Methods — saved cards; the primary card is charged automatically for renewals.
Payment History — every invoice and subscription event. See Invoices & Payments.

On Compare Plans you can toggle Monthly / Yearly billing, see your current plan and renewal date, click View detailed limits on any plan card, or open Compare all limits & features for a full side-by-side table.

Looking for a promo-code field? TDC Site Builder's own billing page doesn't have one — promotional codes are entered on Stripe's hosted checkout page during flows that route through Checkout, such as subscribing from the free tier. See Subscription Management.

AI Credits

The AI Credits tab only appears if your active workspace's plan includes the AI Assistant feature. See Usage Limits & Quotas for how the monthly AI credit allowance itself works.

This tab has two parts:

Buy AI credits — a set of purchasable credit packages (each showing its credit amount and price). Clicking a package's price button opens Stripe Checkout for a one-time payment; once it completes, the page confirms the purchase automatically and adds the credits. Purchased credits never expire and are only spent after your monthly plan allowance runs out.
AI credits — your current balance (remaining monthly allowance plus any unused purchased credits), how much you've used this month, and a paginated table of recent AI usage by task (editor chat, guide, generate site, image, alt text, screenshot).

AI credits are pooled across every workspace you own, not tracked per-workspace — see Usage Limits & Quotas for details.

Subscription Lifecycle & Grace Periods

A subscription's status is one of four values:

Active — a paid or free plan in good standing.
Past Due — the most recent payment failed. A grace period opens automatically (defaults to 7 days, configurable per plan by the platform) during which your workspace(s) keep working normally while a banner asks the Owner to update payment.
Cancelled — the subscription was ended (auto-renew was turned off and the period lapsed) and hasn't been resumed.
Expired — the grace period on a failed payment lapsed without the charge succeeding.

There's no separate "canceling" status in between. Turning off auto-renew doesn't move you out of Active — it just marks the plan as not renewing, and the workspace keeps full access until the period ends. See Cancellation.

If a failed payment or an ended subscription isn't resolved, the affected workspace(s) fall back to the platform's most limited (free) tier.

Plan Limits & Automated Site Locking

If a workspace's site count exceeds the limit on its (shared) plan — after a plan change, cancellation, or expired payment — the platform automatically reconciles it:

Sites in that workspace are sorted by creation date, oldest first.
Sites up to the new plan's limit stay active.
Every site beyond that limit is locked and shows a Locked badge.
Visitors to a locked site's live URL see a standard placeholder page, and editing is disabled for that site.

This reconciliation runs separately for every workspace the same owner has — since they all share one plan, each is checked against the new site limit on its own.

To unlock sites again, you have two options:

Upgrade to a plan whose site limit covers your total site count — locked sites reactivate automatically.
Delete sites you no longer need until you're back under the limit — the remaining sites unlock automatically.

How Billing & Features Work — The full model connecting plans, features, and member roles.
Subscription Management — Upgrades, plan changes, and cancellation in detail.
Usage Limits & Quotas — Every quota a plan sets and how usage is measured.