what does that mean?

单位里有人设计报表模板，然后我编程序做，设计员不停的给我发email, 我回信说

Probably we can meet to discuss the detail about the template before you start working on them. Below are the answers for your questions.

一天以后，她回信给我老板，并把我的这句话highlighted,

 

See email below. I was under the impression that I was meeting up with y’all to discuss this. I’m still confused on if I should be formatting this in Word or not. Can we please set up a short meeting to discuss?

然后我老板回信

– my apologies. Yes, ****** (my name) can meet with you at your convenience. Just let me know when you prefer to meet and we can discuss


***********************************************

My questions.  what's exactly she want to express for" I was under the impression that I was meeting up with y’all to discuss this."
why my boss need say my apologies, and want wrong with my email?