Never heard anyone getting payed for donating anything in Germany. You can get an compensation for expenses, yes. But this is not supposed to be a payment for your donation, it is supposed to compensate for your expenses. For example: Finding a babysitter or paying for bus, train, gas. Sometimes you have to make a medical examination beforehand, which also can take some time.
The German Red Cross for example explicitly doesn’t pay the donors so nobody gets the wrong idea and tries to donate as much and often at the cost of their own health.
I think the idea that a compensation is equal to a payment is flawed beyond reason. If someone has a problem with any organisation misusing donations for profit, they should (rightfully) engage in changing the law. Categorically not donating at all is…well it’s just selfish and stupid.