Google Analytics (Firebase) custom events issue

Does anyone use the Google Analytics plugin?
I recently decided to try it, but for some reason I can’t get custom events to pass to the Firebase console. Only standard, predefined events are showed.

-- Google analytics module

local ANL = {}

ANL.googleAnalytics = require("plugin.googleAnalytics.v2")

---------------------------------------------------------------------------
-- GOOGLE ANALYTICS HANDLING
-- -------------------------------------------------------------------------

-- Initialize the plugin

function ANL.analyticsInit()
    print("Try to init analytics")
    ANL.googleAnalytics.init()
    timer.performWithDelay(1000 * 3, function()
        -- Log an start app event
        ANL.googleAnalytics.logEvent("Start application", {})
    end)
end

-------------------------------------------------------------------------

function ANL.logEvent(eventName, paramsTable)
    print("Try to log event: " .. eventName)
    ANL.googleAnalytics.logEvent(eventName, paramsTable)
end

-------------------------------------------------------------------------

return ANL
            -- Type 1:
            ANL.logEvent("Cross promo 2 button pressed (Pixels)", {})
            -- Type 2:
            ANL.googleAnalytics.logEvent("CP btn pressed", {app = "Pixels"})

(both types are not working)