How does Faithlife want us to report bugs occurring on email-free devices running beta versions of the mobile apps?
You can report bugs in this forum. The only question is can you post logs here... I don't know if there is any way to save the log file to a folder and then upload it in a thread.
I can report by email, but not from the device in question. I can transfer files from that device to another that has email access if need be.
