I had this same problem. I tried restarting the phone, manually starting Android support through settings (had been set to automatic), and had even given it more than 24 hours. I was about to give up, I had more than 40 Android apps installed so I didn’t want to flash.
The solution turned out to be very simple:
systemctl restart aliendalvik
I waited about 30 seconds to a minute, ctrl+c in terminal
systemctl stop aliendalvik
I noticed some of my apps were showing up, but a lot were still missing so. Ctrl+c, then one more time
systemctl restart aliendalvik
All Android apps are there and the data has been retained. This is the only time a Sailfish update has ever given me an issue.