I’ll send you to an older post, here.
It’s a hassle, but it works mostly, unless it’s textbooks or books made for the Indian market. Mobile read has info about the changes, here and here.
It basically involves installing an android emulator to windows and using old Kindle for Android apps as the workaround, but Amazon can stop that whenever they feel like it.
I followed this from Ublock’s Reddit page, it’s working for now.