The TEXT Attribute is made from 1 Option Name and NO Option Value ...

When you set them up, they should have the Option Type on the Option Name set to TEXT and when making the Attribute you would select your Option Name and the Option Value for:
TEXT [RESERVED FOR TEXT/FILES ONLY ATTRIBUTES]

Then you will see an input box for these ...

If you prefer a TEXTAREA you can define that by editing the Option Name once it is created ...