Stashmind is made by Elermond Studio S.R.L.
Open the item and tap Retry. Private posts, posts behind a login and videos longer than 20 minutes cannot be read; the item stays saved as a link with a note that says why. On the free plan, summaries stop after 15 items in a calendar month and start again next month.
Open Settings on your iPhone, tap your name, then Subscriptions. You can also open Settings in Stashmind and use the Pro section. Cancelling stops the next renewal; Pro stays active until the end of the paid period.
In Stashmind, open Settings and tap Restore purchases. Use the same Apple account that bought the subscription.
Apple handles payments and refunds. Ask at reportaproblem.apple.com.
Your library is stored on your device and is part of your device backup. Settings → Export everything writes it as Markdown files in a ZIP archive.
Settings → Delete all local data removes the library from the device. Deleting the app does the same. There is no account to close. See the Privacy Policy.