Dragons - that sounds annoying with the money. I'd be a bit irritated by it too. Did your DP discuss it with you first? It's hard to define exactly what a child "needs" - there's always something they would like, or could benefit from but you have to live within your means. Hope the amount he's paying now is affordble and also can be left alone (assuming his income doesn't change) so you both know where you stand and can plan financially.
Instagram is public unless you change the settings to make it private. My DD has had it since she was 11, though I have access to her password so can check what she's up to. I also set up an account myself in order to follow her and my DSDs, which is a good way of keeping in touch with their online lives.
IT's really hard when you're not the parent though, and especially if they're online at their other house to have any influence over things. I'm hoping my DH will contact his ex this weekend and persuade her to start policing DSD's nocturnal phone use, but don't feel very confident this will actually happen. Worth a try for your DP though dragons - especially as your DSD is young - I think it's much easier to bring in rules about technology when they first start using it than to introduce them retrospectively as we're now trying to do.
whogives - you're absolutely right that DH does need to start being a parent rather than a friend to his DC. On one level I think he does know this, but finds it really hard to change the habits of a lifetime. You're also right that only he can do it at the end of the day, but I have to live with the consequences if he doesn't. I do think that having the DSC to live with us in the week is something I can only agree to if he is willing to step up, which is a big condition to be placing on him. He does have quite a positive attitude about the possibility of changing your behaviour, but I just think he's no experience of being a weekday parent, and his kids aren't used to him taking that role either. Any suggestions how to help him make the change?
On the plus side, it's Friday, I've just finished work, and we've survived a full week of having the DSC with us and apart from the phone in bed issue, it's gone pretty well. They've been good to have around and got on really well with my DC, the dynamic is nice. Tonight I shall have some well-deserved
:)