steps:
File -> create/restore
Next
Wallet with two-factor authentication
Next
I have seed
I am input my seed, but button "Next" not active
This only occurs if the seed is invalid, or you a using a NON 2FA seed. This is what you'll see if invalid seed:
This is what you'll see if NON 2FA seed:
Do you see "seed type"? or is it blank? If blank, then the seed you have is invalid. Most likely, you have a "similar" word, like kid, kit, kite etc.
If I create new wallet, but can not check seed. Button "Next" not active
Do you mean you are also trying:
"File -> Create/Restore -> Standard Wallet -> Create a New Seed"
and after copying seed and then re-entering to check you have copied OK, that that isn't working as well?