I was able to make a small donation ($20), after all, directly through the PayPal site. I think I will be able to donate more later (next month).
You said, "donating won't affect a feature request." I understand that, I'm not trying to get any preferences. This is just for me to feel less bad.
About feature requests. Should I make requests through this forum, or should I just send you a PM? Which way is more convenient for you?
Thank you in advance.