While "patched" can sometimes refer to a software fix, in the context of streaming sites like MKVCinemas, it usually means the site has been blocked, taken down by authorities, or its domains have been seized. Current Status of MKVCinemas
If you are looking for a guide on how to navigate the current landscape safely and legally, here is an overview of why these sites are disappearing and what the best current alternatives are. Why MKVCinemas Sites are "Patched" httpsmkvcinemashaus patched