Due To PrestaShop 1.7 new architecture , Product Page editor and custom module add from pop up is removed, we will try to implement in the future released.
Not sure if problems have been cleared in new version
April-24-2017 - v-4.4.4
[new] PrestaShop 1.7 compatible
in 1.7.5.1 is working - it has some small bugs but it can be use - (the previous version) - now i will give it a try to the update and keep you posted , thanks for the sharing