Goddy, I opened your archive (I don't work for ANSYS) and think I see your problem.

You have an implant in a cylinder of epoxy.

If I turn off the cylinder, I see the length of the implant.

But if I turn off the implant and turn on the cylinder, I don't see a hole in the epoxy for the implant.

You have to subtract the solid implant from the epoxy cylinder and leave a hole and fill that hole with the implant. Then you can bond those two parts together.

I can't do that for you as the geometry is not in the archive, it is in SolidWorks.  Do that subtraction and let's see what you get. Also, all the advice the ANSYS members gave should be rolled into your next attempt.