I have added in changelog that it is a breaking changes update. Also version is 8.4.1 to 10.1.1 which is major update (read more in https://semver.org/ for versioning). So it is obvious that it contain big changes.
Please use https://www.shamimsplugins.com/sensitive-information/ to send your credentials. I will add a new test user using my email address so that i can check if i receive email, is that ok?