Ok, the fix is released. Please download 2.6.2.
Sorry for the inconvenience.
Hey Thomas
Here seems not fixed.
I have encountered same problem. My mobile has been failed and i have wallet seed. I had 2FA enabled.
I am trying to restore wallet by private keys but for some reason i got the "grey" button and i can't go ahead.
I tried to select "restore" and then "standard wallet"

Any idea?