There are numerous misspellings and typos throughout the plugin in the English version: Descrtiption in the appointment list To use using the email notification for user there must be field named "email" or "e-mail" on the customisation page Appointment can't be canceled! on the cancellation page (when cancellation link is clicked in email) Some of them aren't a big problem but anything that we send out to our customers MUST be spelled correctly. What can I do to fix these - I'd be happy to pass on any fixes to be incorporated into the plugin code.