I am also having this issue on my ps4 with the both same error codes of [11006][20645][-2147352571] that one and this one after corrupted data is found [20541] I did deleted the game not t he save data and reinstalled it and hope it may work, unfortunately it did not and which I had to change my password, second time after password is changed I deleted the game and the same data and reinstalled the game, in hope after everything is installed I tried to update the patch file and it was lasting much longer out there as I am at this right now still trying and still gives me the same error as mentioned, I do not know if this is caused by ffxiv's update or if its caused by sony's firmware 5.50 update.