If all fails just use the website.
Messenger (and Messenger Beta) are still available. I'm using beta, but I just downloaded and installed the regular version from the store to test.
It's already been mentioned that pretty much all the apps are going to go (or not be updated) for W10 mobile. Even the MS apps.
I can appreciate that you guys love the OS but it's dying soon to be dead.
If you want to stay in the mobile space it's time to move on really.
Can't buy a new phone now, not with the camera quality & 4K video of the 950XL anyway. Will switch to Android when I can.
Sorry, by "can't buy" I meant "can't afford". I know there are phones with good cameras out there.