Apple watch cellular set up

[Ian52]

I'm getting nowhere fast with O2 support on this one, so hoping the community can help.
I've got an iPhone 7+ and Apple watch SE cellular. Neither tied to a network and both bought before joining O2. Got a SIM only contact now with O2 that has decent amount data allowance.
Trouble is, it won't let me set up the Mobile Data to use the watch remotely from the phone. O2 support have said four times to select "Set up mobile data" in the Watch app on the phone and I've told them four times that I can't because it is greyed out and says "Your O2 account isn't compatible with Apple Watch. Contact O2 for more info".
Any suggestions?

[Hydinho]

I now also have this problem but cannot get anyone at o2 to help me fix this. @O2Emma @O2Trevski 

[O2Emma]

Hi @Hydinho  I will send you a private message so I can look into this for you .

[gdsbhatia]

Did this get resolved. I am surprised how many people are struggling without clear answer @O2Emma 

[Bethany2]

How did people fix this im having the same issue 

[pgn]

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@Bethany2 wrote:

How did people fix this im having the same issue 

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If you are about tomorrow morning, @O2Georgina is on after 8am. Good luck!

[O2Georgina]

@pgn  Thanks for the tag.

@Bethany2  I will send you a private message now