Ralfy is probably correct. Unless you're doing weird things with your honing stroke (unlikely the case), the taped stages of Unicot can hardly be messed up and should give you HHT-3. (popping the hair at minimum 10mm of the holding point.
If it does not, there's something wrong with the bevel.
I would run it over a bottle one stroke, make sure it no longer shaves arm hair, and start all over with the Unicot procedure.
Please don't be discouraged. If the bevel was nearly good, that dulling stroke on glass sets you only back 2 or 3 minutes of work on slurry. Anything more, is work that needed to be done without the dulling stoke as well. But the dulling stroke makes it much easier to recognize when the bevel is ready. It must shave arm hair well.
Be very attentive that you keep the blade in good contact with the Coticule. Failing to do so, is often the reason why people don't get good honing results.
Once the edge starts shaving armhair, go to very thin slurry and spend
enough time, till you're absolutely sure the edge has maxed out. And then some more. You can't overhone on a Coticule.
Only at that point, add electrical tape (tape thickness of 0.15 mm by the way) and make the Unicot effort.
DO NOT do more than 20 very light laps on almost translucent slurry. Rinse the razor and the Coticule very well. Next finish with 30 laps on water only. At that point, test with the HHT. If you think you need it, add another 30 on fresh water.
Most important of all: Enjoy the process.
Kind regards,
Bart.