Speak the words Set

Wordpress 5.6.2 (Mobile and Desktop)

Browser: Chrome (latest version)

H5P plugin version: 1.15.0

H5P content type and version (if a content type was used), and a sample URL or attached H5P: Speak the word set 1.1.10

Any browser console errors:

Uncaught Im Feld 1 fehlt die Eigenschaft "name".

h5peditor.js?ver=1.15.0:264 Uncaught TypeError: Cannot read property 'fields' of undefined

    at Object.ns.updateCommonFieldsDefault (h5peditor.js?ver=1.15.0:264)

I'm a teacher and find H5P very strong in teaching. Thank you!

I'm using "Speak the Words Set" as Wordpress plugin, together with MyCred plugin,
so each time a student speak the word using the correct pronunciation - he gets points!

I couldn't find where to disable "Show Solution".
I don't want my students to use this button, otherwise this task has no meaning for them...

Is this feature no longer available? I cannot find it in the list of available content.