Whatsapp App not linking to Whatsapp Desktop

Hello there,

I cannot get my whatsapp (ip 15 pro max) to link to whatsapp desktop(windows).

It always appears error and reverts back to first page that have to click get started.

But I can link to whatsapp web and android phone.

I'm sure it's not internet connection problem, because I use the same wifi connection for all device.

Have tried everything including deleting current versions and reinstalling. Both on iphone and desktop.

I have tried to link another phone to the same whatsapp desktop and it worked, I have tried another whatsapp desktop from another laptop also the same issue can't connect. so what is the issue?

PLEASE HELP!