If I open the URL www.mypage.de/katalog-bestellen in Chrome then the url is automatically changed to "https://www.mypage.de/katalog-bestellen" and the correct site loads.
But If I open the same URL in Edge, then I get redirected to the startpage at
katalog-bestellen is always cut off!
I figured out that changing
Auto Redirect to Base URL in
System -> Configuration -> Web -> Url Options to
No works, but my SEO professional co-worker told me that this is not a good idea, since google will think that there are two identical websites (www.mypage.de and https://www.mypage.de) and google would see this as "duplicate content" which is bad.
How else can I solve this?