You can cancel your subscription for paid account at any time. In order to do it, go to your Ecwid Control Panel → click on your name in the upper right corner → Billing and Plans page (direct link: https://my.ecwid.com/cp/CP.html#billing) and click the "Switch" link next to the Free plan. Downgrade takes immediate effect, so you lose premium features right after you have switched to the free plan.
Note: if your catalog size exceeds the limitation of the Free plan, you will need to remove extra products from your Ecwid store before downgrading.
We do not provide refunds for paid accounts. They're NON-REFUNDABLE, see our terms or service: https://www.ecwid.com/terms-of-service-html
Ecwid offers free accounts with no time limits. They have all the features necessary to run a store. We believe they are enough to see if Ecwid works for you and to decide if you need a paid account.