Yes, because Google Wallet complains about security issues and is no longer working on beta branch.
Once in stable ROM you'll need to install the last apk found here to get ride of the Google Pay/Wallet security issue
Just follow the instructions.
You have to delete the file found in /data/apex/active/com.android.media.swcodec@XXXXXX.apex
In my case it was com.android.media.swcodec@34101102.apex
Need root to access data folder. If not rooted delete it from recovery
Yes, same here
Just flash previous ROM from recovery and your device will be back again.
By the way, I've downloaded the ROM from mirror -faster- and SHA1 doesn't match whith the one posted on sourceforge.
Now downloading this latest one