MiFare Classic 1k Fob Copy

I have a MiFare Classic 1K fob that I was able to successfully copy and emulate to open my apartment door. I have been trying to locate a magic card or fob to copy it onto. Ive purchased 3 different fobs (one of which was a magic key) which my Flipper said it couldnt write onto. Does anyone have a link to a fob or card that could work? Its for a dormakaba saffire lx door. These are the options I used with no success:



Any help would be greatly appreciated!