about your Danske Bank issue ID issue, you can set an Android PIN by going to: Settings → Android AppSupport → press on “Android version” 5 times → Security → Screen lock. The PIN will only be seen by Android apps, it won’t affect the Sailfish lockscreen. (only available on 5.2/JP26, for older versions you need to install this 3rd-party pkg to get this workaround to work)
Google maps is a known issue and is being worked one, dont know about other Google apps (not sure why use them)
currently Fingerprint reader isnt working for Android apps. there is hope that will change someday in the future
about Teams issues, no idea…F-secure why do you use it on SailfishOS? for VPN sailfishOS has its own native connection settings
WhatsApp has always kinda sucked when it comes to backups, even on Android and even more so when you change platforms (mainly Android < → iOS).
For me, it only worked if I logged into my Gmail account for the first time during the setup to pull the backup. For some reason, it didn’t like it when I tried picking a pre-logged-in account in microG.