After you update/install CO:Writer Universal iOS on your device, you have to add the keyboard to your keyboard list and give it access.
Only iOS 8.0 and higher support 3rd party keyboards.
There is no momentary dictionary when using the Co:Writer Universal iOS keyboard.
Steps to Adding the Co:Writer iOS keyboard to the third party list:
On Your iOS device navigate to settings>>general>>keyboard
Tap on Keyboards.
Tap on Add New Keyboard.
Under third party keyboards tap on Co:Writer Universal.
On the keyboard list tap the arrow to the right of the Co:Writer Keyboard.
Make sure Allow Full Access is turned on. (Slider should be green)
Tap on the home button.
The Co:Writer Universal iOS keyboard is now ready to be used.
(When you log into the keyboard you log in through the Co:Writer Universal iOS app. Once logged in double tap the home button and click back into the app you are using the keyboard in.)