Hi Joto, I've been trying to catch you up these days but is being pretty difficult. I didn't know how to deal this so I finally will post here in search of a solution.

Some time ago I donated some keys to the site, then I donated 3 more, but seems like you dropped their value and I didn't realize that till I donated. It lasted a couple days or so and went back up again to their old value. I've donated 19 more keys so I can get to the VIP rank, but the problem is I'm stuck in $49.70, so I'm asking if it would be possible to readjust those 30 cents considering was for a couple keys in those days I didn't realize they went down.

If that was not possible, how can I donate 30 cents to the site? I don't want to waste a whole key for 30 cents and the site only allows me to donate a minimum of $5.

Thanks in advance.

The minimum donation is $1, not $5, no idea where you're getting that info:-
https://i.imgur.com/JsL6Qnp.png

Other than that, you may just have to, as you put it, 'waste' 70 cents.

You can donate $1 if you type into the field. We make the selector jump at every $5 because we want to discourage $1 Paypal donation as 33% will be going to Paypal.