I would guess that lack of SIM card, then add Google A/C registered to the not present SIM card would be a problem not overcome by update.
As for Anonymous account with no SIM, untested but may well be problematic but advice to Clear storage and restart like this may resume service [Solved] Teracube 2e apps misbehave - #2 by aibd
I suggest switch off all Advanced Privacy (and restart) before further testing.