Last-known location, Find Me, and geofence Places (home, school, alerts on enter/exit) still work. Use GPS Family Tracker.
Day-long route history / Timeline (the old "Advanced Geotracking" add-on) pulled Google Location History from the child's Google account. Google moved that timeline onto the device and locked third-party access. The Timeline card in the Parent app is not shown anymore.
If Billing still lists a Geo Track / Advanced Geotracking add-on on an old subscription, it will not restore the old Timeline map. Email support@safelagoon.com if you are being charged for it and want it removed.
Do not relink Google Link expecting routes to come back. Google Link is for YouTube / web activity, not a replacement for Location History.