Apple Watch SE: Workout app kilometer split vibration issue

I just got a new 3rd generation SE-watch with IOS 26.3.

I have exactly the same problem with my former watch SE-watch 2nd generation and nobody seems to know what's wrong

When I run with the training app I no longer get notifications for every 1 kilometer.

I used to get a vibration but after I got IOS 26 it does not work

I have tried everything.

Unpaired, paired, deleted the watch. On my watch i have at least 100 times made sure the toggle was on for my split times - which is set to 1 kilometer

I have made sure I get notifications both on my watch and also the phone and the watch app on the phone

I have made sure the haptic feedback on the watch app on the phone is on

I think I have tried everything

I thought when I got a brand new watch it would be solved but unfortunately it hasn't

Does anybody have any idea hot to solve it

Since I'm running a lot and a lot of kilometres, it is really annoying

I get notifications if I run with headphones - then I get a voice message. But often I run without