Not getting all WhatsApp notification on Apple Watch SE.

I'm confronted with a situation. I have an Apple Watch SE and since I bought it, I don't receive all the notifications on my watch. I've tried all the suggestions on Apple support and I even sent the watch to service, but they said the watch works within the parameters given by the manufacturer.

But I still don't get all the notifications. I only get parts of the messages I get on WhatsApp. I can hear the phone notifications but they don't appear on my watch. I get very frustrated and don't know what else to do. I've unpaired the device several times and repaired it. I've connected with another iPhone and nothing. I'm running the latest updates.

Has anyone been confronted with this problem so far?

Any advice?

Thanks,

Andrey