Integration with PlagiarismCheck.org

I would like to submit a request for integration with PlagiarismCheck.org. With Unicheck no longer supported after this year and with Turnitin's Similarity tool being cost-prohibitive, PlagiarismCheck.org is a more cost-conscious solution for Plagiarism checking. After searching through several other options including Grammarly for Education, Google Classroom, etc., we have identified PlagiarismCheck.org as the best solution for our school. I would imagine that it would work for many of the smaller schools that Populi services as well. Thanks!