Card transactions above €1 earn you 3% cashback in Grover Cash.
The main exceptions are:
Mail order or phone order transactions
Declined or expired reservations
Payments to gambling companies
Transferring money to banks
For all the details, take a look at the Grover Card's General Terms and Conditions.
You can earn a maximum of €60 per month in Grover Cash. Once you reach the €60 limit, you'll have to wait until the following month to restart earning Grover Cash.