AnkiDroid Open Source TeamFebruary 14, 2020
Hi there! I *thought* AnkiDroid 2.9.3 and android 4.1 would work with AnkiWeb even after they upgraded encryption. Android 4.0 will no longer work, but Android 4.1 is supposed to though it is the very oldest that might work. If you test via chrome that your username or password is correct, but AnkiDroid still won't sync then it's too old, sorry :-(