Cannot activate my SIM card because I don't have a German passport

I bought an O2 SIM card in Edeka on 11.07. I tried to activate it online, but the Postident video chat did not accept my foreign passport. The post office could not process the Postident coupon with my passport, either. I went to two O2 shops in Munich, one in Sendlinger Str. 7 and the other in Neuhauser Str. 45, but they told me that they cannot activate a SIM card that is not purchased in an O2 shop, and I should go to Edeka. I went to Edeka, but they said that they cannot activate the SIM card, and I cannot return it. After calling many times, I reached the customer service for prepaid (017688855282) on 13.07. The lady said that any O2 shop can activate an O2 SIM card, so I should go to an O2 shop. I asked for advice via O2 chat, and I was told that Videoident or Postident at the post office should accept my passport, so I should try that again. Again, Videoident did not accept my passport, and told me to go to the post office. If foreigners are not allowed to use any O2 SIM card purchased in a supermarket, there should be a warning next to the products. I would like to either activate my SIM card, or return the SIM card and have my money back. Any suggestions? Thank you.