Okay, forgive me if I sound harsh, but when somebody requests that your provide the recipe, please provide the recipe. Saying I modified JAO by adding half a grapefruit doesn't even begin to describe this. When we ask for info, it is so that we can try to understand what's going on, not because we want to have you just typing for no purpose. Rarely do I (or anyone else) have the time to try to go look for somebody's recipe in another thread. Please do your part.
If you added 900 g of honey to 2 liters of water, your starting gravity would be 1.108 (or thereabouts). If you added 900 g and enough water to make the total 2 liters the gravity would be closer to the expected starting gravity of JAO. Which was it?
Secondly, you are not using Fleischmann's bread yeast. You are using a wine yeast with an ABV tolerance that is much higher, and using one that is designed for cool ferments in a high temperature setting. The bread yeast is meant to be used a room temps, your wine yeast is most definitely not. What this means it that this yeast is going to dry this mead out. JAO is not meant to be dry - it is a sweet mead recipe. When you dry it out it usually tastes, dry, bitter, phenolic, yeasty, and perhaps a bit flat. The fact that this hasn't even finished fermenting means it is going to taste like crap. Very few dry meads taste good when they are young - they need a year or two of aging for the flavors to develop. Even sweet meads need time to clear.
In addition, by fermenting at too high a temp, you will have created higher-alcohols that may be burning and which may mask good aromas, and you will have scrubbed off good aromatics by the rapid evolution of CO2. I'm surprised it doesn't taste like paint thinner.
You might want to let this finish fermenting under airlock, and then let it clear and age for a good long while.
There are a couple of points to take home:
1. If you want JAO to be good, follow the recipe. Even then, giving it a few months to age helps.
2. Use a yeast that's appropriate for the temperature (or control the temp).
3. If you make something dry, don't try to judge the flavor without giving it a year to age (at a minimum).