About a month ago my Iphone 5s updated and afterwards I couldn't log in to my google account on my Iphone, when I try to log in from any other device it works completely fine. Neither in the youtube app nor when I try to log in to my gmail account in the safari browser. I always get following message:
When I click on next following instructions are shown:
I did everything as told and it didn't change. I searched google, and nothing could help me. I uninstalled the youtube app, reinstalled it, still no changes.
The only intresting fact is, that I am logged in to my gmail account in native mail app and this works completely fine.
I could try to reset the whole Iphone, but I would prefer to find a better solution than that.