Of course! By paying with your Magenta Pay card, in addition to 20% of your purchase value in €, you automatically benefit from Coins in your Magenta Pay Wallet.
So, if the total value of your Magenta Pay card transaction on Dyson products is €100, you automatically earn 100 Coins in your Magenta Pay Wallet.
Don't forget that Coins are Magenta Pay reward for EVERY transaction you make with your card, regardless of the current promotion.