You are not having a private message with the product managers, you are in a public forum of peers. Peers who know what they want, research, buy the best match and don’t make a future promise core to their purchase decision. We do test a purchase immediately on receipt it does what we intended of it and return (in my case next day) if it doesn’t do as claimed.
We are being respectful.
Vendors change their minds. They find the need diminished, or it is harder than they thought. Minds change. We don’t know why that happened but also we cannot change it. But we can each buy based on existing features, and consider roadmaps as nice-to-have. A windows user spends time away from their PC (food, bathroom, exercise, work, etc) so every windows user has a mobile.
Not everyone with a mobile has a PC. PCs are often now corporate supplied where software cannot be installed - for good reasons as software each has an opportunity to insert security issues into the corporate network. So even if there was a windows version, some cannot install it.
You are not just mentioning a Windows app, you’re now also asking for a doorbell to do other than designed to do. So the immediate ask of you above is scope drift.
Not denying they said they would offer a windows app, but change comes from within and we each can learn to buy only what exists now and if it doesn’t do what it currently claims then return for a full refund.
This community is a good source of peer information. It is not official support. You’ve already received the useful information from Tank who from you and another user received negative feedback for their free contribution. How is that being respectful?