Ya might wanna try again. Couple thoughts-

You want the media moist, not wet.

Some like peat,some don't.

Media should drain well- toss in a little perlite if it won't.

Rootone is fine, but just the dip should do ya- there's a lot of IBA in there, and some copper sulfate IIR- I wouldn't bed the plant in it.

Seven days is not all that long- these could still make it.

I think you want your media a bit dryer, and your air a bit wetter.

You could also try 18/6 or 20/4- while I always seem to get the best results at 24/0, the actual data (gasp!) says that you should get quicker root development with a dark period. Not sure if it's actually related to photo or to the gentle swing in temp- I can't find a biochemical reason why the dark period should help, but I'm not gonna argue with actual data. U of Mich Dept. of Agronomy has a better sample set then I do- tho I'm working on it.

Play around with a bunch of scenarios- when you find the one that works for you, you have a winner. Worst case- you have way too many cuttings rooted, and have to select the most vigorous. Not a bad problem to have.