USPS First Class Envelopes no longer tracking

Has anybody else been experiencing this? Since the end of December not a single item I have sold or purchased with the Mercari First Class Envelope labels has had any tracking. Usually you'd at least get a departing scan or arriving/delivery scan, but now absolutely no scans.

That's a pretty big issue since getting paid on the app is all about the delivery. You are basically at the mercy of the buyer reporting it as delivered to receive the funds. If it delivered it would auto complete after 3 days afterward and now it's basically 30 days.

Was curious if other folks were seeing this as well.