Why my run activity is not added to training load? It has recorded to activity, but not added to training load. Forerunner 935.

I running with FR935.

I cycling edge 530.

I also Zwifting.

Cycling and Zwift cycling is added to exercise load. But my runs didn’t. Is it FR935 is not support with the exercise load?

I run when I’m not cycling. And the exercise load is missing on runs.