I'll pay you $2000 worth of Bitcoin or Monero if you fix a bug in open-source C++ project on GitHub.

Project is not very advanced and any good programmer should be able to do it.
You have to do some testing to find the actual bug and make a PR to fix it.

I will pay half in advance if you tell me what exactly causes the issue, and rest after you make a PR and fix it.

PM me for details.