Hegumen, you need to brush up your German. I believe that you intentionally fail to notice the following quote: "westbulgarisch (macedonisch)". Whether the sources are suitable, is the reader's right to decide. Many sources speak of "multiple Bulgarian recensions" and two major literary centres in Bulgaria.
Second, the Ohrid Literary School is Bulgarian by ethnicity. There are no authentic sources which mention "Macedonian" ethnicity prior to the 18th century. On the cotrary, they mention Bulgarian and Slav concurrently. Can you prove me wrong? If you continue to dispute the sourced information, I will expand the section to prove my point about the Bulgarian character of the Ohrid Literary School. However I hope we can reach an agreement on the current state of the article, as it treats the language issue generally without focusing on separate schools.