I have been using the Swiftkey keyboard on all Android devices for years. In the beginning it was still the "paid" version. But now I have the beta version on my Nexus 6P (Android 8.0) in use.
If I click on the icon (yellow circle), the app crashes immediately. This happens since the last two updates. I find this function allows to transfer some functions from Apple to Android. There would be Swiftkey the 1st app that would make such a thing available. It is to be expected that the function could be brought back to life.