TWAT - what you ‘told me’ is irrelevant. What we AGREED was 10am. It is to everyone’s benefit that we adhere to the timings agreed.
Don’t ever give him reasons / tell him what you are doing. This is none of his business and irrelevant.
He really is full-on twat at every turn, isn’t he! And right from the start, even in the first few days of the AGREED arrangements.
He can afford to hethis hair cut but not to buy two potties? Bullshit!
And of course withholding the harness backpacks was entirely deliberate.
Keep logging everything, address his shortcomings in writing coldly and factually every time and keep a tally of everything you have been forced to spend because of his deliberate incompetence / dickheadedness.
Be prepared to stick firmly to your guns for the next few weeks in order to build up sufficient evidence of his behaviour. In the meantime, you might want to send him a running account at the end of each month itemising and totally every penny you have had to spend because he his wilfully ignored the requirements of solo fatherhood. Remind him this sum will be subtracted from any settlement if he continues to fail to pay what he owes.