I'm now quite certain he lied about having a covid test in order to get out of his scheduled visit. He emailed this morning saying he "just got his [negative] test result back" so he is able to see S2 this afternoon. Test results in our area are texted back within 24-48 hours and he is saying it took 6 days. That, combined with the fact it was a holiday long weekend, makes the odds of untruth pretty high. He also made no mention of rescheduling the sleepover or making up the missed visit. I do not understand the need to lie - he could have just asked to switch weekends if he had plans for this one.
I also need to address the child support in arrears. I've drafted an email but feel quite nervous about sending it, even though it's completely justified and necessary. I decided to give him the chance to fix it before defaulting to the child support agency and having them collect the payments. We have a private arrangement where the agency determines the amount and he does a direct debit. They recently revised the amount and he hasn't updated his payments accordingly. It's probably a good idea for me to change the arrangement and have them handle everything on my behalf. I do not trust X to do the right thing and chasing him for money is pretty low on my list of fun things to do.