Yeah there seems to be a problem connecting it to FB.
When I install the one of the APKs you have provided it doesn't pick up my original account I've initially installed onto the device. However if I redownload the APK from Google Play it picks it when I click to sync to FB and allows me to overwrite the character created when using the APKs you have provided.
I have tried to link my accounts by doing the following:
>Title Screen "FB Login Button" - Failed
>Options - attempted to link Google Play Account - Failed
>Facebook Invite a friend - Failed
>Share - Failed
It seems to be unwilling to connect to Google Play or Facebook atm. But everything works as stated (except for the always Summon, that would not work.)
Hope my feedback helps I'll be following this thread! Great work btw!