Is it possible to transfer SDDM themes to Plasma Login Manager?

I used a theme called Sugar Candy (store[dot]kde[dot]org/p/1312658) , which I applied from the KDE Settings menu. Now that my distro has moved to Plasma Login Manager, my old theme isn’t applied any more.

I installed and configure my SDDM theme 3-4 years ago and I don’t remember the entire process of doing so. Since both login screens are based on QML, is it possible to transfer my theme from SDDM to PLM?

The login screen looks really out of place compared to my desktop theme. There’s also no option to change clock format on it to 24-hour. Why not just let the users customise it like other theming options from the Settings menu?