Cannot make or Start phone calls from MAC

Hi,

I have updated my macbook to Mojave and my iphone to 12.1.2

Both devices are on the same wifi network and both logged in with the same iCloud account.

I have the cellular call option on both mac and phone enabled.

Sms relay works with the mac and the handoff function work perfect too.

The only thing I can't get going is to make a phone call from the mac or receive a phone call on the mac.

Its getting really annoying at this stage cuz I just can't figure ir out.

I always get the same error message when I try to make a phone call.

"your iphone and your mac must be on the same wifi network" ( which they are)

Any help welcome.

Thanks