Ultimate Mobile Kit for iOS & Android - Firebase

We have purchased this plugin a couple of months ago with intention to use it for our crash reports on Mobile. As of today, the plugin is no longer available for sale and the docs on its site don’t mention Unreal integration, but only Unity.
This all looks like the plugin is no longer going to be supported for Unreal and I am not interested invest into it, unless I can be sure that there will be support in the future.

What are the alternatives for Crashlytics for mobile apps for UE 4.25? Does anyone have any recommendations or insights?