Contact us

Questions about your membership, the data or the site.

Get in touch

Contact details are listed in our Legal Notice.

Postal address: Tech Improvement Inc, Philadelphia, Pennsylvania

Please write from the email address on your account when your question is about your account or membership.

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Forgotten password? Use Sign in, then “Forgot your password?”, and we will email you a one-time link.
Email alerts and notifications can be changed in your account under Notifications, or with the unsubscribe link in any email.
Download or delete your data in your account under Privacy & data.

Membership, payments and privacy

Upgrade, switch plan, update your card or cancel on the Membership page. Cancellation and refunds follow the Cancellation & Refund Policy; payments are processed by Stripe.

You can ask for access, correction or deletion of your personal data through the contact details in the Legal Notice. How requests are handled, and your right to complain to a supervisory authority, are explained in the Privacy Policy.