On the download page, there’s a very large button prominently labelled ‘Download’. If you press this, you get logged into Paypal and presented with a payment page.
Please don’t do this. It’s really scummy — it’s the classic Dark UI scammer behaviour. I don’t mind you asking me to donate towards Fritzing development. I don’t like you trying to trick me into paying.
This kind of behaviour is extremely alienating and makes me much less inclined to trust the developers, which I don’t think helps anyone.