I have flashed both the ST firmware PMID701i_13_firmware_4.0.img and elektrik 701i_13_elektricity_rom_v_02.img and both give that issue and some weird youtube app error login.
I have used several versions of netflix app, even the one downloaded from amazon app store (sugested in xda) gave me the same error.
If I log with the browser it logs just fine.
Updated:
WTF I don't know what I did but it is now working, the last thing I did was trying to install CWM
-- CWM-based Recovery 6.0.2.8 for A13 tablets (dopa) --
-- Installation completed --
weird stuff, I'm on the Onda firmware