I wrestled with this as well after migrating. Some pointers:
- A number of people have reported that they needed to delete and re-add their phones under the new app before presence started working. I ended up doing this and presence started working a day or so later.
- I’m finding the if-then automation a bit flaky overall, and I’m not ready to depend on it for locks. I now use @RBoy Lock User Manager presence-based activation, which is working like a charm.