I created a webmap in AGOL this spring, downloaded it to Collector classic and it worked great. Recently I added 3 layers, shared them appropriately, made sure all were available offline, created a new map area, and downloaded to Field Maps. There were no download errors.
However, when I open the map in Field Maps (Android, version 21.1.0), all I see is my location cursor and a completely blank background. No basemap, no layers.
When I tap "layers", all my layers are there. Toggling some on or off makes no difference on what I see.
I also tried downloading the same offline area in Collector (Android, 20.2.2) with the same result.
In both cases I tried zooming in and out, but still cannot see any layers. Field Maps has auto-synced several times, but I still cannot see any layers.
Does anyone have any ideas how I can see these layers?
Firstly, are you using a custom basemap or global one? And have you tried going into bookmarks and selecting default exent, which will zoom you to the extent of all your data