Hello,
Sorry to hear you are having issues. Yes, currently Fences for ARM based systems are only available for users that have ObjectDesktop insider release active subscribtion. You have two choices, either purchase ObjectDesktop package subscription or wait Fences with ARM support release. Hopefully, it will be soon, but there is no official time announced yet. Do know, very recently Start11v2.1 with ARM was released for all : Ref here: https://forums.stardock.com/529963.
If you wish for refund. Please raise support ticket using the link below, use the "Refund" option. Include all information details. Remember to record down the ticket number for future reference if needed. Do not raise multiple ticket, that will make your ticket back to the end of the line. Send once and wait. Ticket will be answer by the order they send in.
https://stardock.atlassian.net/servicedesk/customer/portal/4/group/13
Thanks
Basj,
Stardock Community Assistant