Unable to add additional number to Family Bolt-on

[Adino]

I am trying to add an additional number (will be 5 numbers in total including owner and new one) to my Family Bolt-on, (via https://mymobile.o2.co.uk/family/manage) however it won't let me as it complains that one of the existing numbers is invalid, but does not tell me why ?

It also asks you to tick the box 'I have read and accept the Usage Agreement' However you cannot read the 'Usage Agreement' as it is a 404 dead link. http://yourfamily.o2.co.uk/familyUsageAgreement

There is also appears to be no way to contact O2 online, if you try the online chat it only allows pay monthly or business customers.

Is there another way to manage the family bolt on ?

[O2Emma]

To be honest @MI5 neither can I but it has been many moons ago since I last dealt with a family bolt on issue 

Ive passed it on anyway .

[O2Emma]

Yeah definitely @Cleoriff has been really busy on customer service lines lately glad I could help

[MI5]

That's great @O2Emma 

Fingers crossed they do something about it

[Adino]

Many thanks for the help.

[MI5]

You're welcome @Adino 

Pleased we could help you