Thank you @Debby for the quick updates!
But, like others, I can't seem to be able to install the app. I have all the confidence that you guys will fix it quickly though.
Thanks for the update and the tag @Debby! Unfortunately, running into the same problem as the others regarding app unable to be installed. Will be patiently awaiting for a fix
I used apk-signer too, and it worked, I installed the game. But all my books and progress is lost and I can't login with my Google account... Don't know if the mod is working as I don't want to start 'my' books again from the beginning.