Wrong porfolio value

My current portfolio when manually adding up the prices from Kraken and Bitcoin.de is 6.428,70€, Cointracker shows 6.258,00€ which is 170€ or almost 3% off. Maybe this is related to my other issue here: Wrong Prices/Holdings displayed? Don’t undertand this - Support / Request Help - CoinTracker Forum.
But the difference isn’t only explained by the ETH price difference.

Anyone can explain this?