+1 for “nothing,” or at least “not much.” You’re probably having a stressful dream because you’re stressed/dealing with “issues” in real life, as you hinted already. But I suspect this isn’t exactly news to you, as you’re already sought other people’s advice to help you work through them. Assigning parallels between dreams and real life beyond the general vibe or theme of the dream (stressful, unable to help others) is fraught with bias, however. Details in dreams are pretty random, and humans are very good at making connections between random things (dreams and real life, in this instance).
I think dreams have very limited potential for self-discovery, i.e. if you’re really happy you might have more “good” dreams, if you’re really anxious/stressed you might have more “bad” dreams, if you’re really horny you’ll probably have more “sexy” dreams, but they won’t really tell you something you don’t already know. Towards the end of grad school I used to have bad dreams due to stress, but I was obviously super stressed out in waking life so it wasn’t a big surprise. The ironic thing is I wrote the thesis, passed my defense, got my degree, got a good fun job in my field, etc. AND I STILL HAVE THE SAME DREAM!!! Doesn’t mean I’m stressed out about my thesis still, it just means that my brain thought “Hey, remember when I was freaking out about that paper a couple years ago? Let’s revisit that one tonight.”
Dreams of feeling powerless in the face of danger are a VERY common motif. It’s also quite common for man-made objects like light switches, watches, computers, phones, etc to malfunction in dreams. A common way to “catch” yourself inside a dream is to get in the habit of looking at your watch twice in a row in real, waking life. This habit will often carry over into your dreams, where the second glance at your watch will often reveal that your watch is behaving erratically. And of course, the tendency to have recurring dreams is also very common, my guess is because you have to dream, and you remember recurring dreams, so your brain gets lazy and plays a rerun instead of going through the hassle of writing and directing a new episode.
What I’m saying is that you’re probably having a stressful dream because you’re stressed. It recurs because you’re still stressed, you still have the same brain, and it’s easy for your brain to revisit a classic. The phone not working is a common feature of your primitive/less intelligent “sleeping brain” not really grasping (or caring) how modern devices are supposed to work.