Not all cooler tape has text, some is clear and tough to see, even cut the same dimensions as the bottom of the cooler.
It looks like your cooler is not the issue, the compound seems to have spread evenly. If your BIOS is up to date and you've tried using multiple programs to read temps then either your motherboard is supplying too much voltage due to bad regulators perhaps, or your sensor is bad. It is still possible that your heatsink is lacking liquid in the pipes too. Maybe there was a manufacturing error, I'm not sure they test them after they make them if it appears to have no leakage. It's possible they didn't fill them with liquid by accident before they sealed it. I'm reaching here, but just trying to think of any possible reason for such high temps since you seem to have been fiddling with it for awhile. I'm sure it's frustrating.