They have not yet supported EOS.
They have started to Full EOS support. see below their announcement. They are also running a signature campaign to highlight the words that
OWNR support Full EOS.
OWNR Wallet is now available in Mac App Store! Download the app and make use of the multifunctional HD wallet with full EOS management!
Okay, if I wanted to create a EOS wallet with Ownr, what should I do first?
They have posted an article in medium. You can find a youtube video link in there. You should take a look there to understand it easily.
https://medium.com/ownrwallet/managing-eos-in-ownr-wallet-5a7e66a30e00