No response to Windows App SDK push PFN mapping request after 20 days, push still 403

Hi,

I'm working on push notifications for our Windows app Poscura (Flutter, packaged MSIX) and I'm stuck waiting on a PFN mapping request.

On Sep 11 I emailed [email protected] (subject: "Windows App SDK Push Notifications Mapping Request") with the PFN, AppId and ObjectId for two apps:

• Dev: Pos Test App (Store ID 9N57PK1HTWLB), PFN NightSoft.PosTestApp_1r8n4br7rdy0w
• Prod: Poscura by Motion Future Inc., PFN MotionFutureInc.Poscura_yh970zwe6kb5y

It's now been 20 days with no reply and no bounce either. Meanwhile our pushes keep failing, and I've spent a while making sure it's not on my end:

• Getting the token works fine (login.microsoftonline.com/{tenant}/oauth2/v2.0/token, scope https://wns.windows.com/.default) for both Entra apps.
• But POSTing the toast to the channel URI from the packaged app always comes back 403 Forbidden, which from everything I've read means the mapping isn't done.
• The old login.live.com route is closed for new clients, and the Partner Center–provisioned MSA app can't get a token either (AADSTS9002331 on the tenant endpoint, AADSTS9002332 on /consumers), so the mapping is really the only path forward for us.

A couple of notes: I sent the email from my personal address — I'm a developer on the team, and our Partner Center owner can confirm ownership if needed. I'm happy to share the AppIds/ObjectIds privately.

So my questions: is this mailbox still being monitored? Could someone check on these two mappings? And if email is no longer the way, where should I submit this instead?

Thanks a lot.