UPDATE: Rewards had settled down and I'd been paid every day for over a week.
I deposited some BTC on Tuesday and BOOM they've vanished again! There's clearly a bug that messes things up when you add coins to your account.
Please CP, if you're reading this, can you investigate?!
I also have this issue. Yesterday I deposited 0.0014 BTC and converted it all to tokens. Putting me from 9k to 323k tokens. I should have been put up to the bronze tier as I now have more than 100k tokens, but it didn’t give me anything. No upgrade. No interest. Absolutely nothing. Is there some kind of unwritten rule where if you ‘add’ coins to your account, you won’t get the VIP rewards? I looked at the section how the vip rewards system works and it says nothing about ‘added’ coins not being counted for the VIP rewards system? So am I missing something or does ‘adding’ coins screw everything up?
Sorry to hear about your issue but I'm glad it's not just me!
I'm not aware of any restrictions on depositing extra BTC and there's nothing written about it on the site. Randomly last night my tier was reinstated and I earned tokens and lottery tickets, but I suspect it'll vanish again pretty soon.
Coinpot support doesn't reply, but can I urge you to write to them anyway to flag up the issue you're having. It's clearly a bug and if enough people report it CP might address it.