Billing, refunds and cancellation

1. Service provider, seller and scope

The Lumdeck service provider and seller is Quietstack OÜ (registry code 17608504), Sepapaja tn 6, 15551 Tallinn, Estonia. This policy forms part of the Terms and applies to consumers and businesses. Mandatory local rights take precedence over any less favourable term here.

Payment-confirmed registration includes a 30-day trial at Free limits, followed automatically by the plan chosen at checkout unless you cancel beforehand. Existing accounts keep their access and are not enrolled in paid billing automatically.

Quietstack OÜ sells your subscription and handles billing questions, refunds and product support. Stripe processes payments and provides checkout, invoices and the subscription portal on our behalf. A payment method offered by Stripe, including Link, does not change the seller. Mandatory consumer rights remain available.

2. Price and renewal

• Plans are per workspace, monthly or yearly in advance. USD and EUR prices are fixed separately. Review the currency, total for the whole billing period and renewal interval before paying. Annual monthly equivalents are not monthly instalments. Checkout shows the applicable final total and any tax before you confirm. Where Stripe offers a local currency, its conversion rate and fees are disclosed at checkout; that option does not change our fixed USD/EUR list prices. Check the renewal currency and amount before confirming.
• Paid subscriptions renew automatically at the agreed price and interval until cancelled. We give at least 30 days' notice of a price change, effective from a later renewal, and preserve any additional consent rights required by law.
• Only workspace owners can buy, change or cancel subscriptions. Receipts and invoices are available through Billing → Manage subscription.
• New workspace owners get 30 days at Free limits from confirmed payment setup. Stripe stores the payment method and automatically charges the selected plan when the trial ends unless you cancel beforehand. We send a reminder before the trial ends. Additional workspaces share the account's original deadline. After expiry, existing decks and links remain readable; new uploads, invitations and live hosting need paid or admin-granted access. Existing workspaces retain their previous Free access. Invited teammates can join an existing workspace without their own payment method, within its member limit.

3. Changing a plan

Stripe shows the new recurring amount and any prorated charge or credit before you confirm a change. Confirmed plan changes apply immediately when Stripe accepts them; the existing plan remains if a required payment fails. A credit is not necessarily a cash refund. Mandatory refund rights still apply. Currency changes require support.

Above a plan limit, the affected new actions are blocked. A downgrade does not by itself delete your presentations.

4. Stopping renewal and failed payments

Cancel through Billing → Manage subscription, or contact office@kinesislab.ai if you cannot access it. During a trial, cancel before the end date to avoid the first charge. Cancellation otherwise stops renewal at the end of the paid period. Consumer withdrawal below is a separate right and can end the subscription earlier.

Stripe may retry failed payments according to the configured retry schedule. We notify workspace owners. When Stripe marks the subscription unpaid or ended, paid access ends. Existing content remains readable under the applicable retention policy; expired Free access does not restart. Resolve an active subscription before deleting a workspace.

5. Consumer withdrawal

Consumers worldwide may withdraw within 14 calendar days after concluding their subscription agreement. For a trial subscription, we also offer a full refund if requested within 14 calendar days after the first payment following the trial. This is Lumdeck's contractual policy in addition to mandatory rights. Immediate access does not waive it, and we do not deduct for use during those 14 days. Longer or renewed withdrawal periods required by local law remain available.

Use Withdraw from a contract, email office@kinesislab.ai, or write to Quietstack OÜ (registry code 17608504), Sepapaja tn 6, 15551 Tallinn, Estonia. Send your name and enough information to identify the contract. No reason is required. Sending your statement before the deadline is sufficient; support does not need to read it first.

We acknowledge online submissions with a dated receipt and email. After identifying the contract, we stop the subscription and reimburse eligible payments without undue delay and no later than 14 calendar days after being informed, using the original payment method unless otherwise expressly agreed without fees. Bank posting can take additional time. We do not require account deletion to exercise withdrawal.

Optional model statement: “To Quietstack OÜ, Sepapaja tn 6, 15551 Tallinn, Estonia, office@kinesislab.ai: I withdraw from my Lumdeck service contract. Contract/workspace or invoice: __. Ordered on: __. Name: __. Address: __. Date: __. Signature (paper only): __.” The online form or any other clear statement also works.

6. Other refunds and service problems

We correct duplicate or mistaken charges. If we discontinue a paid service, terminate without customer breach, or you terminate because of a material change under the Terms, we refund the unused prepaid period. If you report an unintended annual renewal within seven days without using paid features since renewal, we refund it.

Consumers retain statutory rights to correction, price reduction, termination and reimbursement for nonconforming digital services. Outside these rights and the policies above, ordinary cancellation does not refund a partly used period. Contact support for review; this does not restrict chargeback or other legal remedies.

7. VAT and other taxes

Quietstack OÜ is not currently VAT registered. Quietstack is responsible for applicable tax obligations as the seller; Stripe processes the payment. This is not a claim of a worldwide tax exemption. We do not add VAT under a registration we do not hold.

Consumer offers show the applicable tax-inclusive total where required, and checkout discloses the final amount before payment. Business tax IDs are optional information for determining the correct treatment; selecting business use or entering an ID does not automatically create a tax exemption or reverse charge.

8. Contact

Billing and complaints: office@kinesislab.ai. Telephone: +19406016358. WhatsApp: +19406016358. Free, Pro and Team support: weekdays 09:00–17:00 CET/CEST, first response within 12 business hours. Enterprise: as agreed. Statutory deadlines are not extended by support hours.