Probably not since it’s not related. Unless it somehow helps the case.
Working with Demons raw like this can make the magick quite dangerous (Even working with Demons with a well constructed ritual with good constraints can still be a bit dangerous in some cases). But I suggest you do what @jbkbmz suggested to really find out.
Basic sigil magic is what I was thinking of when I wrote that. I noticed the spell also includes Belial, which can make things very… interesting, to say the least.
But of course, shit happens in real life all the time. I’ve also had things a go wrong after I did magick and then I’d be like… oh shit, was that the magick? But it wasn’t the magick that caused it (and in some cases that’s completely sure). So don’t worry too much but just be cautious. Working with Demons in that way is not exactly the safest, and on the LHP many consider pain to be a good thing, but Demons are intelligent beings and likely won’t cause something so very against your will.
I can tell them to stop immediately or work with an angel. Skeptical at if the demons actually had a hand to play in screwing other stuff up. Just to be cautious I’ll run a protection spell tomorrow since its Tuesday. Or ask them directly by divination which my go to is a pendulum. Thanks.
Don’t worry too much, when I first started doing banishing frequently a relationship in my life was also destroyed. I wondered if it was the banishing that caused it, but through divination found that it wasn’t, and the relationship was later on recovered. So you can do some divination on it to see what the cause was.