Saying that you can't replicate the issue on your end is appreciated but if memory serves me that was your exact response when the same issue arose with PHNL but yet it turned out to be a very real problem.
Even if the final effect is the same, it doesn't necessarily mean the cause, and so the solution, would be the same as with PHNL. Any problem of ground altitudes fighting, will look very similar, even if it might be caused by different things, sometimes even acting together.
Of course, I've tried the PHNL solution first but, since you said it didn't work, it probably means the cause is not the same so, we need to try another thing but, as I've said, fact we can't reproduce it, makes it difficult to find it (once the PHNL solution is excluded), regardless of our willingness of fixing your own particular problem.
If I am the only person experiencing this issue presently,does that negate the issue trying to be resolved? I should hope not, I'm a bonfide customer.
Big misunderstanding here: whenever we say "you are the only one reporting this issue" it DOESN'T mean that we don't think your are not important, or we don't believe what you are seeing, or that we are any less inclined to find a solution.
It means, instead, an entirely different thing: not being able to reproduce the issue ourselves, it might take longer than usual to find a solution, because we have to try different things at random, not being able to see the problem *before* and the fix *after*. This is the one and only meaning of the "you are the only one reporting this issue" sentence.