Another Idea ?!
MD5 is correct. Flashed it again and same Problem.
Apps are closing, like Bluemail, Zalando, Amazon Alexa, Ewelink, Finanzguru, Zeitungen and more...
What can I do to fix it ? Magisk 17.1 is running fine, also Adaway and Whatsapp, other Apps like the Xiaomi Design App are also...