Unfortunately, I do not have access to monetary services because I live in a country where it is very difficult to transfer money to foreign banks
Do you have Visa/Mastercard available in your country? You could use a bank card paying via 2checkout.
However, I need your paid services and I ask you to let me at least copy one of the old versions of minibb.
I don't support and don't distribute the older versions of miniBB. Why do you need such a version?
Regarding beautifulness, I was meaning the web layout only, colors and fonts combination :) Whatever looks nice to your eyes may not be acceptable by some other person. This all is very subjective, but for me in result, it's only important that you as a customer like it.