I have iphone and apple watch SE3 and cant make a cellular

[Blazej_09601]

Hello, the guide is unclear as the watch app in iphone is saying:

"

MOBILE PLAN

Set Up Mobile Service

The 3 Ireland account on this iPhone cannot be used to add a mobile plan to “Ela i Julek’s Apple Watch”.

For more information about Apple Watch mobile plans visit" 

I am ob bill not top up so it should be possible right?

[Three_Niall]

@Blazej_09601 there would be a 14 day cooling off period for plans bought online or over the phone.