You can submit an issue on https://github.com/abp-filters/abp-filters-anti-cv/issues. We recommend using our issue template so that we can reproduce the issue and tackle it ASAP.
We prefer you to file a detailed issue report instead of creating a pull request. We kindly ask that you only create a pull request if you consider yourself experienced in writing filters and your request solely covers the issue that you want to report.
If you have any thoughts or ideas that you would like to share, feel free to message us at filters+cv@adblockplus.org.