I'm a 23 year old woman, working as a junior Q&A.
Some time ago I asked the dev team (mostly men, all older than me) for some help with something that I needed to do my job. They weren't really happy with my request and made sure to let me know. They also didn't seem in a hurry to make the change until I told them that it really needed to be done (and the boss supported me).
One of the devs just informed me (using online communication) that it will finally be ready tonight. I want to acknowledge the fact that I have received the message--and maybe even thank them--but I don't want to sound like they are doing me a favor. How can I express that?
For now, I have just ignored the message and posted something unrelated in the communication channel we use (Slack).
Edit: Please consider that I'm really bad at interpersonal skills when answering my question. So be as precise as possible.