[Xposed Framework Modules] Roughy:
From what I've seen of it, it will either work (but take a veeeeeeeeery long time to perform the first-time setup ), or just crashes immediately.

If the wrong version of the module is installed it would just fail silently, I think.

Launching the Swiftkey app itself rather than the keyboard is generally a good idea when it's going to take a long time. We're talking like 5+ minutes.

If you are opening the Swiftkey app, it will just display the white Swiftkey logo while it's doing this.

Reminder that Tai-Chi does not appear to work on Pie, or at least didn't when I tried it.

I assume "Version 24" refers to the API level, which would correspond to Nougat I believe.

In general we have had more luck running the ARMv7 version of Swiftkey, even if you're on an ARMv8 device.

I forget if that was a thing for Tai-Chi too, or just EdXposed.

Exi does print status updates to logcat, so installing Android Studio ( or some other simpler viewer ) might be a good idea.

Exi's logcat entries are prefixed with "Exi/", you can use the filter feature in the upper-right corner of the logcat viewer to filter by tag.

The complete startup process should look something like this:

2019-03-11 21:47:29.035 17103-17103/? I/Exi/LoadPackageHook: Module loaded in com.touchtype.swiftkey.beta, CRC: 5af2590b, Module version: 2.1.3
2019-03-11 21:47:30.594 17103-17103/? I/Exi/Hooks: Elapsed for keyboard priority: 0.623 seconds
2019-03-11 21:47:30.620 17103-17103/? I/Exi/Hooks: Elapsed for emoji priorty: 0.026 seconds
2019-03-11 21:47:30.624 17103-17103/? I/Exi/Hooks: Elapsed for hardware priority: 0.004 seconds
2019-03-11 21:47:30.719 17103-17103/? I/Exi/Hooks: Elapsed for prediction priorty: 0.095 seconds
2019-03-11 21:47:30.719 17103-17103/? I/Exi/Hooks: Beginning secondary setup
2019-03-11 21:47:30.946 17103-17103/? I/Exi/Hooks: Elapsed for Basehooks: 0.227 seconds
2019-03-11 21:47:30.946 17103-17103/? I/Exi/Hooks: Elapsed for Hardware keys: 0.0 seconds
2019-03-11 21:47:30.958 17103-17103/? I/Exi/Hooks: Elapsed for Stylehooks: 0.012 seconds
2019-03-11 21:47:30.958 17103-17103/? I/Exi/Hooks: Elapsed for Prevent period: 0.0 seconds
2019-03-11 21:47:30.963 17103-17103/? I/Exi/Hooks: Elapsed for Sounds: 0.005 seconds
2019-03-11 21:47:30.963 17103-17103/? I/Exi/Hooks: Elapsed for Emoji: 0.0 seconds
2019-03-11 21:47:30.990 17103-17103/? I/Exi/Hooks: Elapsed for Keys: 0.027 seconds
2019-03-11 21:47:31.011 17103-17103/? I/Exi/Hooks: Elapsed for Predictions: 0.021 seconds
2019-03-11 21:47:31.123 17103-17103/? I/Exi/Hooks: Elapsed for Popups: 0.112 seconds
2019-03-11 21:47:31.186 17103-17103/? I/Exi/Hooks: Elapsed for Selection: 0.063 seconds
2019-03-11 21:47:31.186 17103-17103/? I/Exi/Hooks: Finished secondary setup
2019-03-11 21:47:31.186 17103-17103/? I/Exi/Hooks: Total time elapsed: 1.215 seconds
2019-03-11 21:47:31.186 17103-17103/? I/Exi/Hooks: Elapsed for Total: 0.0 seconds
2019-03-11 21:47:31.191 17103-17103/? I/Exi/LoadPackageHook: Finished priority work in com.touchtype.swiftkey.beta
2019-03-11 21:47:31.637 17103-17103/? I/Exi/EmojiModifiers: I am a teapot
2019-03-11 21:47:31.712 17103-17103/? I/Exi/KeyboardHooks: Got theme loader instance