Last time I checked, I found out that you're providing a commercial service if you put a button for paypal donations on your website. I don't know whether this

Last time I checked, I found out that you're providing a commercial service if you put a button for paypal donations on your website. I don't know whether this is how things are today but it lead me to believe that it is not so simple to decide whether or not you do need an Impressum.