Don't seem to get mobile app notifications since 8.2.5

Since 8.2.5 hit and I updated the mobile companion app, I don’t seem to get notifications when missions complete, at least not for hours afterward. I made sure notifications are allowed on my phone for this app, and I even made sure that the app is not being put to sleep by the OS, but nothing seems to work. This is a Samsung Galaxy S10, with the OS and the app up to date as of this posting. Interestingly, if I have missions complete overnight while I’m sleeping, the notifications will be visible when I check in the morning, which means that the notifications may be showing up, but they are arriving many hours after the missions are actually completed. Not sure what else I can try to fix this.