Discrepancy between IOS and PC puzzle Tiers

I usually solve puzzles on my mobile, and as a result, I reached the end of the Champions Tier. Today, I decided to use my PC to solve some puzzles. To my surprise, after completing the last stage of the Champions Tier, I was taken to the Champions Tier leaderboard.

Does anyone know why there is a discrepancy between IOD and PC? 

It's currently only available in Beta on the website, so it could be a bug. I don't recall seeing other reports like that though. On the next puzzle were you in the next tier when playing?

On my mobile I am on Elite one but on the PC it is Champions one.

Found out it's an iOS bug. It should be fixed soon if not already, so you might check for updates if you're still seeing the issue