Reminder: write everything down
Just got hit with a legal bill I didn't expect because ex is claiming I missed a pickup and I had zero documentation. Turns out a text from 6 months ago saying "cool" to a schedule change = admission I agreed to something I didn't actually agree to.
Use your co-parenting app. Screenshot texts. Email confirmations. Learned this the expensive way and my lawyer basically said "yeah, you should have records." Don't be like me.
Did you have anything in writing confirming the pickup time? That's usually what makes the difference in these situations. Sorry you're dealing with a legal bill over this though, that's frustrating.