You might try starting with a factory reset before following the steps in the Things That Are Smart wiki.
There’s some tips in the following post in /r/winkhub from someone who just recently did the conversion:
https://www.reddit.com/r/winkhub/comments/ghqpk0/rooting_wink_relay/fqbexxy
Nice! Thanks for the tip! Some people mentioned that the latest Assistive Touch doesn’t work, so they’ve had to install an older version from APK Pure. I pulled the version that was on my Wink Relay and put it on: http://wink.boshdirect.com in the footer.