Rotation problem: Some people have reported that their clients turn upside down, disable screen rotation as a temporary fix.
Version miss match: When trying to log in the game says that you got the wrong client please try deleting your client (& all downloaded files) and then redownload the latest client android client at testing.albiononline.com/clients/Albion-Online.apk
Error downloading update!:
Make sure you got the latest client installed, if you did not download it today then you probably got an old one. testing.albiononline.com/clients/albion-online-setup.exe
And then start the game directly from the "game" folder inside of the Albion Online folder. This way you skip the launcher (Which is not recommended, but if the launcher is not working this is a workaround)