OWNER ACTION, not engineering.
experiencenet.com and www moved off Squarespace on 2026-09-14 (#679). Nothing on the domain depends on Squarespace any more: DNS points at the bxl1 edge, TLS is ours, and email never touched Squarespace (MX stays on Google).
Before cancelling, note that the Squarespace account is the only remaining copy of the old site. #722 records its pages, its ten products and their prices, and the old DNS, so nothing is lost if the account goes. Export from Squarespace first if you want the original pages themselves.
Then cancel the subscription so it stops billing.