Unfortunately something happened in the last week or two that wiped out HR zones for some people. This causes new HR only activities to not get training load. The fix is simple: Just recapture your HR zones (and resting HR if you know it) and wait a couple of minutes for everything to get fixed. Sorry about that.
Unfortunately I don’t have old enough backups to restore from.
I haven’t conclusively found what caused the problem only fixed some suspects. If anyone captures their HR zones and they get wiped again please let me know.