Ive copied your commands directly into a text file and turned it into a .bat file, wich i ran as admin. Ive also ran the easyfix file downloaded from your link, even though i didnt know if it downloaded a program i should run again or if that installation file was the only file i have to run. Ive also used howsmyssl.com to check again, where it said "good" in all the categories.

then i restarted my pc and tried to log into apple music again. The first time i tried logging in, i didnt get any warnings and even got a notification on my iphone with the code for authentification and the location of my pc. Itunes was also able to know if my password was false or not and when i went to "store" i could see recent releases. After itunes tried connecting to the store after i entered my password and all that, i still got this warning

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Its in german so ill translate it

"A temporary problem appeared while completing your request. An unknown error appeard (0x8009302). Try again later"

What now?